Cylinder Head Accessories

ARP 8740 Pro Series GM LS Head Stud Kit 234-4317 - 2004-Up, 12-Point These ARP Pro Series Head Bolts are made of 8740 (190,000 psi tensile strength) material and utilize a 12-point head. They are cold-forged and heat treated prior to thread rolling...

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...

LSXceleration Stainless Steel 8mm x 1.550 LS Exhaust Valve Set 15-21550-8 Stainless Steel LS Valves 1.550" 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...

LSXceleration XF3 Billet Rocker Arm Stand 15-XF3RS Rocker arm stand for LSXceleration XF3 cylinder heads. These will not work with OEM heads. Features: 6061 aircraft grade aluminum Made in the USA       

ARP Hex Head, 8740, Pro Series LS1 Head Bolt Kit 134-3609 - 1997-2003 W/ 2 Primary Bolt Lengths These ARP Pro Series Head Bolts are made of 8740 (190,000 psi tensile strength) material and utilize a hex head. They are cold-forged and heat treated...

Cometic LSX 4.165 Bore MLx Head Gasket C5702-052, Right Side LSX 4.165" Bore. 0.052" 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 4.165 Bore MLx Head Gasket C5703-052, Left Side LSX 4.165" Bore. 0.052" Compressed Thickness MLx Gaskets utilize an integrated "stopper" layer for combustion chamber sealing and improved clamp load around the cylinder without increasing...

LSXceleration Stainless Steel 8mm x 2.080 LS Intake Valve +0.500 Long  Stainless Steel LS Valves 2.080" Head x 8mm Stem x 5.450" OAL x 0.290" Tip Features: Hardened Stem Tip Chrome Plated Stem Fully Machined Surface Swirl Polished Undercut Stem 21...

Cometic LS 3.810 Bore MLS Head Gasket C15361-051 LS 3.810" 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...

Cometic Dart LS Next 4.200 Bore MLx Head Gasket C15363-052, Left Side Dart LS Next 4.200" Bore. 0.052" 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 C15362-052, Right Side Dart LS Next 4.200" Bore. 0.052" Compressed Thickness MLx Gaskets utilize an integrated "stopper" layer for combustion chamber sealing and improved clamp load around the cylinder...

Cometic LS 4.100 Bore MLS Head Gasket C5489-040 LS 4.100" 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...