Alternators that come loose are a pain, which is why these super tough bolts were developed by ARP (your choice of polished stainless or chrome moly steel (ARP 300 both rated 170,000 psi).
The stainless has the added advantage of being rust and corrosion resistant.
Strange as it may seem, many races have been lost in endurance competition, oval track, and off-road 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 ARP's bulletproof alternator studs.
Made from a premium grade 8740 chrome moly steel alloy, they are heat-treated to a nominal 200,000 psi tensile strength.
They are very rigid and won't bend under the stress of competition, eliminating problems with alternator pulley alignment.
Here's more reliable insurance from the innovators at ARP.
Available in 5.000 and 5.250 lengths.
Includes a flat washer and a 12-point nut.
Alternator Bracket Bolt Kit 12Point Head Material Black Oxide.
