ARP Cylinder Head Stud Kit, High Performance, 12 pt., Chevy, LS1/LS6

Precision centerless-ground and thread-rolled to Mil-S-8879 specs. Black oxide finish protects from wear and corrosion. Includes hardened parallel washers for uniform load distribution and accurate torque readings.

ARP High Performance series head bolt kits are tough! Rated at 170/000 psi--15 percent stronger than Grade 8 fasteners. Available with hex heads or reduced wrenching 12-point heads that eliminate the need for valvetrain removal when re-torquing cylinder heads.