Cylinder Heads

AA Performance Products high quality chromoly valve spring retainers that fit all stock diameter valve springs as well as most aftermarket single or dual springs that use the stock spring diameter. These valve spring retainers use stock style 3 groove valve locks.Application Note: This is considered..

AA Performance Products high quality titanium valve spring retainers that fit all stock diameter valve springs as well as most aftermarket single or dual springs that use the stock spring diameter. These valve spring retainers use stock style 3 groove valve locks.Application Note: This is considered..

Durable Bugpack valve spring shims designed for setting precise spring installed height. These shims play a crucial role in establishing the correct geometry of the valvetrain, optimizing valve seating, and controlling spring pressure. Specifically tailored for 1.250" O.D. single or dual springs, th..

Durable Bugpack valve spring shims designed for setting precise spring installed height. These shims play a crucial role in establishing the correct geometry of the valvetrain, optimizing valve seating, and controlling spring pressure. Specifically tailored for 1.250" O.D. single or dual springs, th..

Durable Bugpack valve spring shims designed for setting precise spring installed height. These shims play a crucial role in establishing the correct geometry of the valvetrain, optimizing valve seating, and controlling spring pressure. Specifically tailored for 1.250" O.D. single or dual springs, th..

Hardened valve lash caps prevent the valve stem tip from mushrooming under the load of heavy valve spring pressure. These Lash Caps are required when using Stainless Steel Valves in most cylinder head applications. Designed for 8mm O.D. valve stems, heat treated and simple slip-on installation. Sold..

Hardened valve lash caps prevent the valve stem tip from mushrooming under the load of heavy valve spring pressure. These Lash Caps are required when using Stainless Steel Valves in most cylinder head applications. Sold as a set of 8  Application Note: This is considered a universal part a..

This Chinese cylinder head has extra material around the intake ports for your head porter to work his magic. Cylinder head comes completely assembled with stock valves, spring, retainers and locks. Includes sensor mount for fuel injected applications. Made in China  Specifications:Bore: 8..

This is a brand new, High Performance Cylinder Head for a Porsche 914 2.0L. Made from an AA 2.0L 914 casting with breather, Heads comes with Stainless Steel 42mm Intake and a Stainless Steel 36mm Exhaust Valves, with Harden Keepers, Chromoly retainers, and Single high rev springs. It's ready to inst..

Intake Valve, 113109601B, 31.5mm, 40hp 1200cc, Stock, Sold ea...

Intake Valve, 35.5mm, 15-1600cc, Stock, Sold ea...

Manley’s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unpara..

Manley’s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unpara..

Manley’s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unpara..

HP Hardened Valve Keepers Set 16 Use W/HD Valve Springs, Sold as Set (16 pcs)..

Valve Keeper 3 Groove 12-1600cc, Sold as Set (16 pcs)..

Engle Valve Keepers Set 16 Use W/HD Valve Springs Valve Locks, 6005, Keepers, Engle Cams, Sold as Set..

This AutoLinea cylinder head has extra material around the intake ports for your head porter to work his magic. Cylinder head comes completely assembled with stock valves, spring, retainers and locks. Includes sensor mount for fuel injected applications. Made in Brazil Specifications:Bore: 85.5..

Exhaust Valve, 30mm, 12-1300cc, Stock, Sold ea...

Exhaust Valve, 32mm, 15-1600cc, Stock, Sold ea...

Manley’s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unpara..

Manley’s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unpara..

Manley’s Race Series valves are meticulously engineered to meet the rigorous demands of bracket, drag, and oval track racers and are the ultimate choice for engines operating under 8000 RPM. Both exhaust (XH-426) and intake (NK-842) valves are constructed from high-quality stainless steel for unpara..

Chromoly Spring Retainers F/Hipo Valve Springs-(Wide) Spring Retainers, Chromoly, Single or Dual, Sold as Set..

Valve guide for Volkswagen motor, 13mm OD x 9mm ID press fit. Fits 17-2000cc Volkswagen engines. Valve Guide, 021101417A, Exhaust, Stock, 13mm OD x 9mm ID, Sold ea...