ARP 147-3901 12-Point Cylinder Head Bolts Kit for Chrysler Dodge Jeep 5.7L 6.1L 6.4L Hemi EnginesFastener Style: Bolt Head Style: 12 point Fastener Material: Chromoly Fastener Finish: Black oxide Washers Included: Yes Cut to Fit: No These Pro series cylinder head bolts 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 190,000 psi. The Pro series are also available with hex and 12 point heads. All kits come complete with hardened parallel washers for