Cylinder Head Accessories

Cometic LS 4.000 Bore MLS Head Gasket C5477-045 LS 4.000" Bore. 0.045" Compressed Thickness MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel. The embossed outer layers of...

Cometic Dart LS Next 4.200 Bore MLx Head Gasket C15363-040, Left Side Dart LS Next 4.200" Bore. 0.040" Compressed Thickness MLx Gaskets utilize an integrated "stopper" layer for combustion chamber sealing and improved clamp load around the cylinder...

Cometic Dart LS Next 4.200 Bore MLx Head Gasket C15362-040, Right Side Dart LS Next 4.200" Bore. 0.040" Compressed Thickness MLx Gaskets utilize an integrated "stopper" layer for combustion chamber sealing and improved clamp load around the cylinder...

LSXceleration Inconel 8mm x 1.600 LS Exhaust Valve +0.500 Long   Inconel LS Valve 1.600" Head x 8mm Stem x 5.450" OAL x 0.290" Tip Features: Hardened Stem Tip Ideal for Extreme Duty and Turbo Applications Chrome Plated Stem Fully...

LSXceleration Stainless Steel 8mm x 1.600 LS Exhaust Valve +0.500 Long    Stainless Steel LS Valves 1.600" Head x 8mm Stem x 5.450" OAL x 0.290" Tip Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl...

LSXceleration Stainless Steel 8mm x 1.600 LS Exhaust Valve Set 15-21600-8 Stainless Steel LS Valves 1.600" Head x 8mm Stem x 4.915" OAL x 0.202" Tip x 45 degree valve seat angle Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl...

LSXceleration Stainless Steel 8mm x 1.600 LS Exhaust Valve 15-21600-1 Stainless Steel LS Valves 1.600" Head x 8mm Stem x 4.915" OAL x 0.202" Tip x 45 degree valve seat angle Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl...

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 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...

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. Made in the USA    

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...