ARP Main and Block Bolts Subaru WRX 2002-2014 / STI 2004-2021 / Legacy GT 2005-2009

Part #: 260 - 5401. These ARP main bolts for Subaru EJ20, EJ25, and EJ257 engines are made from 8740 forged chrome moly. They have a large under - head radius and rolled threads, which make them super reliable. The threads are rolled after heat - treating, giving them 1000% longer fatigue life than regular bolts. Paralell - ground hardened washers are included. These are crankcase through bolts for all EJ series motors. They fit 2004 - 2008 Forester XT, 2002 - 2014 Subaru WRX, 2005 - 2009 Legacy GT, 2005 - 2009 Outback XT, and 2004 - 2020 STI models.

Using these ARP main and block bolts is easy. First, make sure your engine is clean and ready for installation. Then, carefully place the bolts in the appropriate holes in the crankcase. Use a torque wrench to tighten the bolts to the recommended torque value. When installing, pay attention to the orientation of the bolts and the washers. Do not overtighten the bolts as it may damage the engine parts. For maintenance, regularly check the bolts for any signs of wear or looseness. If you notice any issues, replace the bolts immediately. Keep the bolts clean and dry to prevent rust and corrosion.