ARP Crankcase Thru Bolt Kit Subaru EJ20 / EJ25 (incl. Impreza, WRX, STI, Forester)

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Pro Series ARP2000; 2-Bolt Main

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Pro Series crankcase bolts are application-specific, rated at 200,000psi, and designed for use in competition engines. Hardened parallel-ground washers are included with each kit. Forged from 8740 chrome moly steel, all ARP main bolts feature a reduced wrenching head, large underhead radius and rolled threads for the utmost in reliability. The threads are rolled after heat-treating which gives them about 2000% better fatigue strength than most main bolts that are threaded prior to heat-treating.



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ARP Crankcase Thru Bolt Kit
Pro Series ARP2000; 2-Bolt Main
Subaru EJ20 / EJ25 (incl. Impreza, WRX, STI, Forester)
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