ARP 2503003 Pro Series Ring Gear Bolt Kit, for Select Ford Applications ARP's legendary quality helps you hit the track with confidence Specially designed by ARP to handle the tremendous shock loads generated while racing Forged from a premium grade chrome moly steel Rated at 200,000 PSI, which is considerably stronger than Grade 8 hardware .750 under head length, 7/16-20 thread size, and 3/4" socket size
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