Cylinder Heads

Cometic LS 3.910 Bore MLS Head Gasket C5475-040 LS 3.910" Bore. 0.040" 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 LS 4.150 Bore MLx Head Gasket C5014-040 LS 4.150" 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 distortion...

LSXceleration CNC Ported LT1 LT2 L86 L87 OEM Cylinder Heads OEM LT1 LT2 L86 L87 GM Castings CNC Ported. Available to purchase out right or with core exchange.  Features: CNC Ported Intake & Exhaust Runners 5-angle Valve Job Available Bare or...

LSXceleration XF3 LS3 280cc/68cc 11° CNC Cylinder Heads - Stainless Intake, Stainless Exh, 0.660" Lift, Steel Retainers 15-361221-2 6-bolt Rectangular Port (LS3) CNC Cylinder Head Pair w/ Billet Rocker Stands. Features: 6 bolt casting 11° Valve...

Cometic LS 4.100 Bore MLS Head Gasket C5489-075 LS 4.100" Bore. 0.075" 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 MLS LS 4.100 Bore Head Gasket - .070 Compressed Thickness GM Gen III/IV Small Block V8 LS Series MLS Head Gasket 4.100" Bore. Comprised of multiple embossed layers of stainless steel with the outer layers utilizing a viton rubber coating...

Mahle 4.8/5.3L LS MLS Head Gasket 54441 Multi-layer steel (MLS) cylinder head gaskets. Fits: 4.8L Vin Code (V) 5.3L LM4, LM7, L59 Vin Codes (P, T, Z) Increase torque and performance while decreasing oil consumption and emissions. The development...

Chevrolet Performance Steam Crossover Bolt 11588714 6mm x 1.0 x 1.181" UHL

Chevrolet Performance Coolant Air Bleed Plug 12602540

Cometic Gen V LT1/4 4.100 Bore MLx Head Gasket C5038-051 Gen V LT1/LT4 4.100" Bore. 0.051" Compressed Thickness MLx Gaskets utilize an integrated "stopper" layer for combustion chamber sealing and improved clamp load around the cylinder without...

Cometic LSX 4.165 Bore MLx Head Gasket C5702-040, Right Side LSX 4.165" 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 LS 4.100 Bore MLS Head Gasket C5489-051 LS 4.100" 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 layers of...