Arp Ford 351w 12-Point Cylinder Head Studs Kit

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.
SPECS
Fastener Style: Stud
Thread Size: 1/2 in.-13
Undercut Stud: No
Head Style: 12-point
Fastener Material: 8740 chromoly
Fastener Color: Black
Washers Included: Yes Included in this kit is a packet of ARP Ultra-Torque Fastener Assembly Lubricant. It is specially formulated to eliminate "preload scatter" and will enable you to achieve within 5% of the desired preload on the "first pull." Please refer to the enclosed installation instructions for determining the correct fastener tightening requirements. ARP Ultra-Torque is also available separately in larger quantity containers. For fasteners that pass through water jackets, etc., we recommend use of ARP Thread Sealer.

Instructions