ARP Pro Series cylinder head stud kits are used by top professional engine builders throughout the world, with good reason. Manufactured from premium grade 8740 alloy, precisely heat treated and then ground and thread rolled. This procedure is used to give a fatigue strength 10 times higher than studs produced in other ways.
ARP Pro series cylinder head studs assure optimum gasket sealing making them ideal for high compression race engines or turbo / super charged engines running high boost level.
Stud kits are supplied with 12 point nuts.