ARP 2000 Ford XR6 Head Studs - M14mm x 1/2 inchThese head stud kits feature premium grade ARP 2000 material ( Not 8740 material as all previous kits ) that is rated at 220000 psi tensile strength. This kit includes a set of fourteen ARP2000 M14 X 1 2 dia conversion head studs that replace the original M12 bolts, fourteen parallel ground washers, fourteen 8740 chrome moly steel 12 point nuts and a 1 2 oz. pack of ARP Ultra Torque fastener assembly lubricant. All Pro Series ARP2000 studs are