Cylinder Head Accessories

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...

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

LSXceleration Stainless Steel 8mm x 2.020 LS Intake Valve 15-22020-1 Stainless Steel LS Valves 2.020" Head x 8mm Stem x 4.870" OAL x 0.160" Tip x 45 degree seat angle Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl...

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...

Chevrolet Performance Coolant Air Bleed Plug 12602540

Cometic Gen V LT1/4 4.150 Bore MLx Head Gasket C15203-040 Gen V LT1/LT4 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...

Cometic LS 4.100 Bore MLS Head Gasket C5489-060 LS 4.100" Bore. 0.060" 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...

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...

LSXceleration Stainless Steel 8mm x 2.000 LS Intake Valve Set 15-22000-8 Stainless Steel LS Valves 2.165" Head x 8mm Stem x 4.870" OAL x 0.160" Tip x 45 degree seat angle Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl...

ARP GM LS Rocker Arm Studs 234-7207 (5/16") (Excludes LS7) 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 Head Studs 8740 Material - 1997-2003, 12-Point These Head Studs are made of 8740 (190,000 psi tensile strength) material and utilize a 12-point head. Suggested use in OEM replacement, street, non boosted applications.  Recommended...

MLS HEAD GASKETS – GM LS 6.0L, 6.2L *Fits VIN's K, Y 6.0L Engines Multi-layer steel (MLS) cylinder head gaskets.Increase torque and performance while decreasing oil consumption and emissions. The development goals in engine construction determine...