Far superior to any other main bolts available for use in competition engines, ARP main bolts are designed to meet the exacting standards and demands of professional engine builders. Forged from 8740 chrome moly steel, all ARP main bolts 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 2000 percent better fatigue strength than most main bolts that are threaded prior to heat-treating.

Pro Series main bolts are application-specific, rated at 190,000 psi, and designed for use in competition engines. Hardened parallel-ground washers are included with each kit.

Details:

• Material: 8740 Chrome Moly
• Finish: Black Oxide
• Bolt Series: Pro Series
• Kit Style: 2-Bolt Main
• Head Style: Hex
• Package Type: Box
• Kit Type: Bolt

Fitment Notes:

• Make: Chrysler
• Application: 273-440 Wedge, reduced head height hex