There are many important reasons to use ARP® main bolt kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. The bolts are manufactured in our own factory using the best materials, processes, designs and engineering. Every ARP® main bolt kit exceeds the most stringent aerospace specifications.
Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The bolts are manufactured from 8740 chrome moly steel, heat-treated in-house to 190,000 psi tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others. Don’t settle for anything less than the best. Insist on genuine ARP® bolts…you’ll find the name stamped right on the end!

Part Number: 207-5201
Model: Mitsubishi Lancer EVO X 4B11