• ARP Main Bolt Kits | Multiple Ford Fitments (155-5201)
1 1

ARP Main Bolt Kits | Multiple Ford Fitments (155-5201)

ARP Main Bolt Kits | Multiple Ford Fitments (155-5201)

155-5201

Out of stock

$71.80 USD
$78.75 USD $71.80 USD
kADDITIONAL DISCOUNTS APPLIED AT CHECKOUT Sold out

The ARP Main Bolt Kit is a high-performance fastener set designed for professional engine builders and automotive enthusiasts. Crafted from forged 8740 chromoly steel, these bolts are rated at 190,000 psi, ensuring exceptional strength and durability under demanding conditions. The kit features application-specific bolts with a reduced wrenching head, large underhead radius, and rolled threads that are heat-treated post-manufacture. This process enhances fatigue strength by approximately 2,000 percent compared to traditional threaded bolts, providing reliable clamping force and long-term performance in high-stress engine environments.

Suitable for a variety of Ford applications, the ARP Main Bolt Kit fits multiple models with specific engine configurations. It is intended as a direct replacement or upgrade for stock main bolts, offering increased reliability for street, track, or racing use. Installation involves replacing existing bolts with these high-strength fasteners, ensuring proper torque and safety. The kit includes all necessary bolts for a complete main cap assembly, making it an ideal choice for engine rebuilds and performance upgrades requiring superior fastening strength.

Overview

Main Bolt Kit by ARP

ARP Pro Series main bolts are application-specific and rated at 190,000 psi. 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.

Features

  • Main Bolt Style: 2-bolt
  • Fastener Style: Bolt
  • Head Style: 12-point
  • Works with Windage Tray: No
  • Fastener Tensile Strength (psi): 190,000 psi
  • Nuts Included: No
  • Washers Included: Yes

Benefits

  • Designed to meet the exacting standards and demands of professional engine builders
  • Forged from 8740 chromoly steel and feature a reduced wrenching head
  • Large underhead radius
  • Rolled threads for the utmost in reliability

Applications

  • 1968 - 1973 Ford Thunderbird
  • 1969 - 1971 Ford Mustang
  • 1969 - 1970 Ford Mustang Boss 429
  • 1969 - 1973 Ford/Mercury full-size
  • 1969 - 1973 Ford/Mercury intermediate
  • 1971 Mercury Cougar
  • 1977 - 1991 Ford medium-duty F-Series
  • Ford F600/F700/F800
  • 1977 - 1991 Ford B-Series
  • 1979 - 1990 Ford C-Series
  • Ford C900
  • 1977 - c.1991 Ford L-Series "Louisville Line"
  • Ford L900
  • 1972 - 1976 Ford Thunderbird
  • 1974 - 1976 Mercury Cougar
  • 1972 - 1978 Ford/Mercury full-size
  • 1973 - 1976 Ford/Mercury intermediate
  • 1973 - 1997 Ford F-Series
  • 1975 - 1996 Ford E-Series

What's In The Box?

  • 10 - Bolts

Warranty

  • Manufacturers Standard Warranty
View full details