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ARP Main Block Bolts WRX (2002-2014) STI (2004-2018)
ARP Main Block Bolts WRX (2002-2014) STI (2004-2018)
SKU: 260-5401
$379.00
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Product Description
ARP Subaru EJ20, EJ25, & EJ257 Main Bolts are crafted from 8740 forged chrome moly and feature generous under-head radius and rolled threads for excellent reliability. The threads are rolled after heat-treating, giving them 1000% longer fatigue life than ordinary bolts. Parallel-ground hardened washers are included. These are crankcase through bolts for all EJ series motors.