Worried about studs breaking? Don’t be with these ARP studs. The ARP studs are made from A286 aircraft material to mount the manifold to the block. These studs have a tensile strength of 200000 PSI at 1300 degrees as compared to stock studs have a tensile strength of 160000 PSI at room temperature. These ARP stud bolts are also rolled thread as opposed to a weaker cut thread. They work on all North American CAT engines.
