Cylinder Head Accessories

Cometic LSX 4.100 Bore MLx Head Gasket C5076-040, Left Side LSX 4.100" Bore. 0.040" Compressed Thickness MLx Gaskets utilize an integrated "stopper" layer for combustion chamber sealing and improved clamp load around the cylinder without increasing bore...

Cometic LSX 4.100 Bore MLx Head Gasket C5075-040, Right Side LSX 4.100" Bore. 0.040" Compressed Thickness MLx Gaskets utilize an integrated "stopper" layer for combustion chamber sealing and improved clamp load around the cylinder without increasing bore...

Cometic LSX 4.185 Bore MLS Head Gasket C5935-051, Right Side LSX 4.185" Bore. 0.051" Compressed Thickness MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel. The embossed outer...

Cometic LSX 4.185 Bore MLS Head Gasket C5936-051, Left Side LSX 4.185" Bore. 0.051" Compressed Thickness MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel. The embossed outer...

Cometic LSX 4.125 Bore MLS Head Gasket C5934-051, Left Side LSX 4.125" Bore. 0.051" Compressed Thickness MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel. The embossed...

Cometic LSX 4.125 Bore MLS Head Gasket C5933-051, Right Side LSX 4.125" Bore. 0.051" Compressed Thickness MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel. The embossed...

Stock Replacement GM LS 1.590 Exhaust Valve 15-1590  

Manley Extreme Duty Stainless 8mm x 1.590 LT1 Exhaust Valves

Manley LS3/LS92/LS99 Severe Duty Stainless 8mm x 1.590 Exhaust Valves 11661-8 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 Gen V 6.2L LT1 Race Series Stainless 8mm x 1.590 Exhaust Valves 12345-8 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 LS3/LS92/LS99 Extreme Duty Stainless 8mm x 1.590 Exhaust Valves 11685-8 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 Gen V LT1 Severe Duty Stainless 8mm x 1.590 Exhaust Valves 12347-8 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...