Strange as it may seem, there have been many races lost in oval track, off-road and endurance competition due to the OEM alternator stud failing and the subsequent loss of electrical power. To prevent this from ever happening, conscientious engine builders rely on ARPs bulletproof alternator studs. Theyre made from a premium grade 8740 chrome moly steel alloy and heat treated to a nominal 200,000 psi tensile strength. They are very rigid and wont bend under the stress of competition, eliminating problems with alternator pulley alignment. Heres more reliable insurance from the innovators at ARP. Available in 5.000? and 5.250? lengths. Includes a 12-point nut and flat washer.