ARP 234-4343 Cylinder Head Studs Kit for Chevrolet Gen V LT1 6.2L EnginesFits models with the M8 threaded corner studs. Head Style: 12 point Fastener Material: ARP2000 Fastener Finish: Black oxide Washers Included: Yes Pro series cylinder head studs from ARP are cold forged to ensure molecular integrity. They are heat treated prior to thread rolling and machining and are rated at a whopping 220,000 psi. ARP Pro series kits are also available with 12 point nuts, and all kits come complete with hardened parallel washers for