The 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 even load distribution and accurate torque readings.

Specs:

• Cut to Fit – No
• Fastener Finish – Black Oxide
• Fastener Material – 8740 chromoly
• Fastener Style – Bolt
• Head Style – 12-point
• Quantity – Sold as a kit
• Undercut Stud – No
• Washers Included – Yes