Cylinder Heads

LSXceleration Gen V LT4 MLS 7-Layer Head Gasket 14-54622 (Like GM 12654622) 4.0944" (104mm) bore x .053" (1.35mm) thickness x 7-layer MLS This is an OEM LT4 head gasket. Works great for LT1 and L86 engines as well.    

Manley Severe Duty Stainless 8mm x 1.600 LS Exhaust Valves 12355-8 Manley is known as one of the leading manufacturers of Racing Valves in the world. Manley Racer Series Stainless Steel Valves were engineered for Street Performance and Racing...

Manley Severe Duty Stainless 8mm x 1.600 LS Exhaust Valves 12355-8 Manley is known as one of the leading manufacturers of Racing Valves in the world. Manley Racer Series Stainless Steel Valves were engineered for Street Performance and Racing...

Manley Race Flo Stainless 8mm x 2.165 Hollow Stem LS Intake Valves 12350H-8 Manley is known as one of the leading manufacturers of Racing Valves in the world. Manley Racer Series Stainless Steel Valves were engineered for Street Performance and Racing...

Manley Race Flo Stainless 8mm x 2.165 LS Intake Valves 12350-8 Manley is known as one of the leading manufacturers of Racing Valves in the world. Manley Racer Series Stainless Steel Valves were engineered for Street Performance and Racing applications...

Manley Race Master Stainless 8mm x 1.600 LS Exhaust Valves 12353-8 Manley is known as one of the leading manufacturers of Racing Valves in the world. Manley Racer Series Stainless Steel Valves were engineered for Street Performance and Racing...

Manley Pro Flo Stainless 8mm x 2.165 Hollow Stem LS Intake Valves 12354H-8 Manley is known as one of the leading manufacturers of Racing Valves in the world. Manley Racer Series Stainless Steel Valves were engineered for Street Performance and Racing...

Manley Severe Duty Stainless 8mm x 2.165 LS Intake Valves 12354-8 Manley is known as one of the leading manufacturers of Racing Valves in the world. Manley Racer Series Stainless Steel Valves were engineered for Street Performance and Racing...

LSXceleration GM LS3 MLS 5-Layer Head Gasket 14-10046 4.094" (104mm) bore x .052" (1.33mm) thickness x 5-layer MLS. Same as Chevrolet Performance 12610046.    

LSXceleration MLS Head Gasket Set 14-98544 - 5.3L, 5.7L (Like GM 12498544) 3.937" Bore x 0.052" Compressed Thickness Multi-layer steel (MLS) cylinder head gaskets.    

LSXceleration OE Replacemant Head Bolts for GM LS '04 & Up (Like GM # 17800568) One Kit Services Complete Engine

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...