Arp Replacement Bolts Are Forged From Aerospace Alloy And Heat Treated Prior To Thread Rolling And Machining. With An Exclusive, Flat, 12-point Head Design And Larger Than Stock Shank Diameter,
These Bolts Deliver Increased Strength And Improved Flywheel And Flexplate Retention. Rated 170,000psi (hig h-perf.) And 190,000psi (pro-s eries) Tensile Strength.