Check the listing for details. ARP 134-5202 Main Cap Fasteners 4-Bolt Main SBC 350, 400 Hex. Condition: New. Listed at 62.58 USD. ARP 134-5202 Main Cap Fasteners-2-Bolt Main SBC 350, 400 Hex Main Bolt Style: 4-bolt Fastener Style: Bolt Head Style: Hex Works with Windage Tray: No Fastener Yield Strength (psi): 180,000 psi Nuts Included: No Washers Included: Yes Quantity: Sold as a kit. Notes: Designed to fit large journal crankshafts. ARP High Performance Series main bolts are rated at 180,000 psi and a popular premium replacement for OEM fasteners. Designed to meet the exacting standards and demands of professional engine builders, ARP bolts are forged from 8740 chromoly steel and 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 2,000 percent better fatigue strength than most main bolts that are threaded prior to heat-treating. Hardened parallel-ground washers are included with each kit. Normal 0 false false false EN-US X-NONE X-NONE