Cylinder Heads

LSXceleration Stainless Steel 8mm x 1.550 LS Exhaust Valve 15-21550-1 Stainless Steel LS Valves 1.550" Head x 8mm Stem x 4.915" OAL x 0.160" Tip Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl Polished Undercut...

LSXceleration Stainless Steel 8mm x 2.000 LS Intake Valve 15-22000-1 Stainless Steel LS Valves 2.000" Head x 8mm Stem x 4.870" OAL x 0.160" Tip Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl Polished Undercut...

Earl's LS Steam Tube Kit LS0016ERL Steam Vent Adapters & kits. They are designed to eliminate trapped air and steam from your engine to prevent hot spots or overheating. The complete kits are available to plumb your LS engine and include the...

Cometic Gen V L83 3.875 Bore MLx Head Gasket C15426-052 Gen V L83 3.875" Bore. 0.052" Compressed Thickness MLx Gaskets utilize an integrated "stopper" layer for combustion chamber sealing and improved clamp load around the cylinder without increasing...

LSXceleration GM Gen V LT1/L86 6.2L MLS 5-Layer Head Gasket 14-88943 4.110" (104.3mm) bore x .054" (1.37mm) thickness x 5-layer MLS.     

Chevrolet Performance Gen V L83, L86, LT1, LT4 Head Bolt 11611976 1 needed per engine

Chevrolet Performance Gen V L83, L86, LT1, LT4 Head Bolt 11546959 19 needed per engine

Chevrolet Performance Gen V L83, L86, LT1, LT4 Head Bolt Kit 1 kit needed per engine. Kit consists of (19) 11546959 & (1) 11611976.

GM LS Head Studs 8740 Material - 2004-Up, 12-Point These Head Studs are made of 8740 (190,000 psi tensile strength) material and utilize a 12-point head. Suggested use in OEM replacement, street, non boosted applications.  Recommended torque...

LSXceleration GM Gen V L83 5.3L MLS 5-Layer Head Gasket 14-22325 (Like 12622325) 3.835" (97.4mm) bore x .052" (1.33mm) thickness x 5-layer MLS. Made in Germany.    

Dart Stainless Steel GM LS 2.165 Intake Valve 21392165 Dart stainless steel valves are designed to withstand the pressures of high-lift roller cams and feature a head design that promotes high flow. They are constructed of high-strength stainless steel...

Dart Stainless Steel GM LS 1.600 Exhaust Valve 21391600 Dart stainless steel valves are designed to withstand the pressures of high-lift roller cams and feature a head design that promotes high flow. They are constructed of high-strength stainless steel...