Cylinder Head Accessories

Cometic LS 4.100 Bore MLS Head Gasket C5489-036 LS 4.100" Bore. 0.036" 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 4.130 Bore MLS Head Gasket C5317-030 LS 4.130" Bore. 0.030" 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 4.160 Bore MLS Head Gasket C5318-051 LS 4.160" 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...

Cometic LSX 4.185 Bore MLS Head Gasket C5936-066, Left Side LSX 4.185" Bore. 0.066" Compressed Thickness MLS Gaskets are comprised of multiple embossed layers of both AMP (Advanced Multi-Polymer Coating) and uncoated stainless steel. The embossed outer...

LSXceleration Inconel 8mm x 1.600 LS Exhaust Valves 15-31600-8 Inconel LS Valve 1.600" Head x 8mm Stem x 4.915" OAL x 0.160" Tip Features: Hardened Stem Tip Ideal for Extreme Duty and Turbo Applications Chrome Plated Stem Fully Machined...

Manley LS3/L92/L99 Race Series Stainless 8mm x 1.590 Exhaust Valves 11621-8 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...

ARP 2000 Pro Series GM LS Head Stud Kit 234-4345 - 2004-Up, 12-Point These ARP Pro Series Head Bolts are made of 2000 (210,000 psi tensile strength) material and utilize a 12-point head. They are cold-forged and heat treated prior to thread rolling...

ARP 8740 Pro Series GM LT1/LT4 Rocker Arm Studs 234-7208 ARP Pro Series Rocker Arm Studs are made from 8740 (190,000 psi tensile strength) material. They are held to a concentric tolerance of only .005" T.I.R. from thread pitch to thread pitch. These...

GM LS 2004-2014 12-Point Head Bolt Kit TBS-002ERL Features & Benefits:  Material - Chromemoly Alloy Steel Yield Strength - 170,000 PSI Finish - Black Oxide Reduced Wrenching Size – Provides Extra Socket Clearance Choose Form...

Copy of LSXceleration Stainless Steel 8mm x 1.570 LS Exhaust Valve Set 15-21570-8 Stainless Steel LS Valves 1.570" Head x 8mm Stem x 4.915" OAL x 0.160" Tip x 45 degree valve seat angle Features: Hardened Stem Tip Chrome Plated Stem Fully Machined...

Chevrolet Performance Gen V L83 5.3L MLS 5-Layer Head Gasket 12622325 3.835" (97.4mm) bore x .052" (1.33mm) thickness x 5-layer MLS.     

Cometic Gen V LT1/4 4.100 Bore MLx Head Gasket C5038-066 Gen V LT1/LT4 4.100" Bore. 0.066" Compressed Thickness MLx Gaskets utilize an integrated "stopper" layer for combustion chamber sealing and improved clamp load around the cylinder without...