Quick view Details Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 1.750 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11825-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.011in O/A Length, 0.3415in Stem - 11824-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet 1.600 Dia Dish 5.026 O/A Length Severe Duty Exhaust Valves (Set of 8) - 11823-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11822-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet 1.840 Dia Dish 5.140 O/A Length Severe Duty Intake Valves (Set of 8) - 11820-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11818-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Dart Big Block Pro 1 Stock Length 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11817-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.300in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11816-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11815-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.344in O/A Length, 0.3415in Stem - 11814-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chrysler 440-1 Exhaust Valve Kit - 1.810in Head Dia. 5.369in O/A Length, 0.3415in Stem - 11813-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Small Block Chevrolet 2.080 Dish Race Master Intake Valves (Set of 8) - 11812-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811B-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11811-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.040in O/A Length, 0.3415in Stem - 11810-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11809-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.080in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11808-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Ford 351 Cleveland Exhaust Valve Kit - 1.655in Head Dia. 5.067in O/A Length, 0.3415in Stem - 11807-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.940in O/A Length, 0.3415in Stem - 11806-8 MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Ford 351C 1.710 Inch Head Diameter / .3415 Inch Stem / Diameter Stock Height ( Set of 8) - 11805-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Ford 427 (Medium/Hi Riser/Tunnel Port) 2.250 Dia Dish Severe Duty Intake Valves (Set of 8) - 11804-8 MSRP: $432.86 Now: $324.65 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3415in Stem - 11803-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Ford 429intake Valve Kit - 2.250in Head Dia. 5.244in O/A Length, 0.3415in Stem - 11802-8 MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Details Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.760in Head Dia. 5.167in O/A Length, 0.3415in Stem - 11801-8 MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Severe Duty Series SBC Stainless Steel Exhaust Valves 2.080in Dia 5.140in L - Set of 8 - 11858-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Ford 351C 5.167 O/A Length 1.710 Dia Dish Severe Duty Exhaust Valves (Set of 8) - 11857-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.250in Head Dia. 5.494in O/A Length, 0.3415in Stem - 11856-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 2.000in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11855-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevy Big Block .250 Longer 11/32in Stem Dia Severe Duty Intake Valves (Set of 8) - 11854-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Severe Duty Series Small Block Chevy Stainless Steel 1.655in Exhaust Valves - Set of 8 - 11853-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.100in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11852-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Small Block Exhaust Valve Kit - 1.625in Head Dia. 5.065in O/A Length, 0.3415in Stem - 11851-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 2.250in Dia 5.344in L - Set of 8 - 11850-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.940in Head Dia. 5.422in O/A Length, 0.3715in Stem - 11849-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.125in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11848-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.900in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11847-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 5.026in O/A Length, 0.3415in Stem - 11846-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.880in Head Dia. 5.522in O/A Length, 0.3415in Stem - 11845-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevy Small Block 2.080 Head Dia. .100 Longer .3415 Stem Severe Duty Intake Valves (8 pcs) - 11844-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Severe Duty Series BBC Stainless Steel Exhaust Valves 1.880in Dia 5.422in L - Set of 8 - 11843-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevy Big Block .100 Longer 11/32in Stem Dia Extreme Duty & Marine Intake Valves (Set of 8) - 11842-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 1.937in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11840-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.325in Head Dia. 5.509in O/A Length, 0.3415in Stem - 11838-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $395.52 Now: $296.64 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chrysler Top Fuel Exhaust Valve Kit - 1.950in Head Dia. 5.020in O/A Length, 0.3715in Stem - 11837-8 Ideal for Specialized Applications: Tailored for any application where extreme force and heat resistance is a must including Top Fuel, Funny Car, and Marine Engine applications.XH-432 XtremeAlloy:... MSRP: $626.40 Now: $469.78 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.065in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11836-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Big Block Exhaust Valve Kit - 1.725in Head Dia. 5.374in O/A Length, 0.3715in Stem - 11835-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Big Block Intake Valve Kit - 2.190in Head Dia. 5.218in O/A Length, 0.3720in Stem - 11832-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: Now: $386.04 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.020in Head Dia. 4.911in O/A Length, 0.3415in Stem - 11830-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Ford 429 Exhaust Valve Kit - 1.880in Head Dia. 5.070in O/A Length, 0.3415in Stem - 11829-8 Stainless Steel Construction: Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unparalleled durability.Chrome Stems and Hard Tips: Chrome stems... MSRP: $239.60 Now: $179.69 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet Small Block Intake Valve Kit - 2.055in Head Dia. 4.926in O/A Length, 0.3415in Stem - 11828-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley SBC 1.600 Severe Duty Intake Valves (Set of 8) - 11827-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,... MSRP: $382.30 Now: $286.72 CURRENTLY OUT OF STOCK Compare Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...
Quick view Manley Performance Manley Chevrolet 2.020 Dia Dish 5.026 O/A Length Severe Duty Intake Valves (Set of 8) - 11826-8 Proven Fatigue Tests: The Severe Duty? Valves have undergone rigorous fatigue tests. In normal operation, valves experience 20,000 to 25,000 lbs of applied stress. When valves bounce on the seat,...