ARP 1356001 High Performance Connecting Rod Bolt Kit Connecting rod bolts are the most important fasteners in your engine, the key to the entire rotating assembly Replacing inferior OEM fasteners can help you avoid catastrophic engine failure Manufactured from a heat-treated premium grade 8740 alloy chrome moly steel Rated in the 200,000 psi range, which is considerably stronger than OEM or even Grade 8 hardware Complete set includes the bolts you need to upgrade all of the connecting rods in your engine