Description

This ARP 135-5201 BBC High Performance Main Bolt Kit is for 396-402-427-454 4-bolt engines. It comes with 180,000 PSI 8740 Chromoly Steel bolts. This is up to 5X stronger than stock! All ARP main bolts feature a reduced wrenching head as well as a large underhead radius.

Rolling the threadsafter heat-treating gives them about 2000% better fatigue strength than most main bolts threaded prior to heat-treating.This provides the utmost in reliability!

Kits come complete with hardened parallel-ground washers. Sold as a set of 20.

ARP 135-5201 BBC Main Bolt Kit Fits:

• 396-402-427-454 4-Bolt Main Engines

ARP designs their Main Bolts to be far superior to any other main bolts available for use in competition engines. They meet the exacting standards and demands of professional engine builders!

Rated at 180,000 psi, this popular High Performance Series bolt kit is a premium replacement for OEM fasteners.

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.