ARP Main Cap Side Bolt Kit Ford Modular Boss 5.0L 156-5203

ARP Crankshaft Main Side Bolt Kit

ARP 156-5203 or 1565203

Fits: Ford Modular 5.0L Boss (Side Bolts Only)

 Main Bolt Style: Side Bolts
Fastener Style: Bolt
Head Style: 12-Point
Fastener Yield Strength (psi): 180,000 psi
Nuts Included: No
Washers Included: Yes
Quantity: Sold as a kit.

8740 Chrome Moly: Until the development of today’s modern alloys, chrome moly was popularly considered a high strength material. Now viewed as only moderate strength, 8740 chrome moly is seen as a good tough steel, with adequate fatigue properties for most racing applications, but only if the threads are rolled after heat-treatment, as is the standard ARP production practice. Typically, chrome moly is classified as a quench and temper steel, that can be heat-treated to deliver tensile strengths between 180,000 and 210,000 psi.