1959 GMC PM251 Crankshaft Bolts

As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 PSI bolts that let you exert maximum clamping force. Special features include 1/4 Inch thick, wide area washer and an extra tall 12 point head that accepts a deep socket and eliminates the worry of stripping the head.

Product Features:

• Ultra Strong Bolt Rated At 200,000 PSI
• 1/4 Inch Thick, Wide Area Washer And An Extra Tall 12 Point Head That Accepts A Deep Socket And Eliminates The Worry Of Stripping The Head
• Delivers ARP Quality And Reliability
• Made In USA
• 12-Point Head
• Sold Individually
• 200,000 PSI
• 2.470″ Underhead Length

There are many important reasons to use ARP main stud kits, including the elimination of main cap walk and fretting, as well as protecting the threads in your engine block. All kits come complete with hardened parallel ground washers and high quality nuts. Some applications have provisions for mounting wind age trays and have specially designed standoff studs with serrated lock nuts to position the wind age tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat treated in-house to 200,000 Pounds Per Square Inch tensile strength, and precision J-form threads rolled after heat treat to create a fastener that has threads 1000 Percent stronger than others.

Product Features:

• Kit Come Complete With Hardened Parallel Ground Washers And High Quality Nuts
• Manufactured From 8740 Chrome Moly Steel
• Heat Treated To 200,000 Pounds Per Square Inch
• Precision J-Form Threads Rolled After Heat Treat To Create A Fastener That Has Threads 1000 Percent Stronger Than Others
• 200,000 PSI
• Sold As A Kit

As the crankshaft flexes and twists, the balancer absorbs incredible amounts of kinetic energy. To ensure that the balancer is locked in position, ARP has developed these ultra strong 200,000 Pounds Per Square Inch bolts that let you exert maximum clamping force. Special features comes with 1/4 Inch thick, wide area washer and an extra tall 12 point head that accepts a deep socket and eliminates the worry of stripping the head.

Product Features:

• Ultra Strong Bolt Rated At 200,000 Pounds Per Square Inch
• 1/4 Inch Thick, Wide Area Washer And An Extra Tall 12 Point Head That Accepts A Deep Socket And Eliminates The Worry Of Stripping The Head
• Delivers ARP Quality And Reliability
• Made In USA
• Sold Individually
• 7/16″-20 RH Thread Size
• 2.47″ Underhead Length
• 200,000 PSI