Dynatech® 12 point header bolts for any type of heads.
Leave it to Percy to come up with a header bolt that won't come loose when it counts. These bolts have a 3/8" 12-point head for added clearance and once tight, you use a 1/8" hex key to lock in place. They are easy to remove if needed but won't shake loose.
ARP 12 point head bolt kit, 3/8"-16 x .750" UHC. Includes washers. Uses 3/8" 12 pt. socket. 170,000 PSI.
ARP 12 point head bolt kit 3/8"-16 x .750" UHC.Includes washers. Uses 3/8" 12 pt. socket. 170 000 PSI.