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 even load distribution and accurate torque readings.

FEATURES

Fits: 426 Hemi

Cylinder Head Studs, Pro Series, 12-Point Heads, Dodge, Plymouth, 1/2 in., Kit

Fastener Style: Stud

Thread Size: 1/2-20 in. RH

Undercut Stud: No

Head Style: 12-point

Fastener Material: 8740 Chromoly

Fastener Finish: Black oxide

Washers Included: Yes

Cut to Fit: No

Quantity: Sold as a kit.

Notes: Modified for 1/2 in.

NOTE: This is a special order item.