ARP Pro Series main bolts are application-specific and rated at 190,000 psi. Designed for use in competition engines, as well as 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.

More From This Category

Dart Main Cap, Front Ford Aluminium 302 Steel, Each

Dart Main Cap, Front Ford Aluminium 302 Steel, Each

$128.96

View
Dart Main Cap, Rear Ford SHP 302 Steel, Each

Dart Main Cap, Rear Ford SHP 302 Steel, Each

$448.20

View
Dart Main Cap, Center Thrust LSN 350MB Steel Hone Ready, Each

Dart Main Cap, Center Thrust LSN 350MB Steel Hone Ready, Each

$310.75

View
MILODON Main Caps, Angled Side Bolt, Ductile Iron, CNC Machined, For Holden, V8, Kit

MILODON Main Caps, Angled Side Bolt, Ductile Iron, CNC Machined, For Holden, V8, Kit

$650.00

View
Dart Main Cap, Rear Ford Iron Eagle 302/351 Steel Small Bore, Each

Dart Main Cap, Rear Ford Iron Eagle 302/351 Steel Small Bore, Each

$466.81

View
Dart Main Cap, Interior LSN2 1/2 351 Steel, Each

Dart Main Cap, Interior LSN2 1/2 351 Steel, Each

$160.61

View