Fastener Style: Bolt

Thread Size: 1/2 in.

Undercut Stud: No

Head Style: Hex

Fastener Material: Chromoly

Fastener Finish: Black oxide

Washers Included: Yes

Cut to Fit: No

Quantity: Sold as a kit.

Notes: Designed for 1977 and later motors.

ARP High Performance series head bolt kits are tough. They are rated at 180,000 psi--15 percent stronger than Grade 8 fasteners. They come available with a reduced wrenching hex head or 12-point head that help eliminate the need for valvetrain removal when re-torquing cylinder heads.