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cpperformance

CP Performance Boaters Shopping and Product Info Guide
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Main Bearing Cap Stud & Bolt Kits

arp logoThere 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. The studs are manufactured in our own factory using the best materials, processes, designs and engineering. Every ARP main stud kit exceeds the most stringent aerospace specifications. Don't settle for anything less than the best. Insist on genuine ARP studs, you'll find the name stamped right on the end!

Click on the part number to check pricing or place an order.

ARP Main Cap Stud & Bolt Kits
stud & bolt kits

All kits come complete with hardened parallel-ground washers and aerospace quality nuts. Some applications have provisions for mounting windage trays and have specially designed standoff studs with serrated lock nuts to position the windage tray and lock it securely in place. The studs are manufactured from 8740 chrome moly steel, heat-treated in-house to 190,000 PSI tensile strength, and precision J-form threads rolled after heat-treat to create a fastener that has threads 1000% stronger than others.

Description HP Series Studs Professional Series Studs HP Series Hex Bolts
Small Block Chevy 4 bolt 860-134-5601 N/A N/A
Small Block Chevy 4 bolt
w/windage tray
N/A 860-234-5601 N/A
Small Block Chevy
w/splayed caps
N/A 860-234-5602 N/A
Small Block Chevy 2 bolt main 860-134-5401 N/A 860-134-5001
Small Block Chevy 2 bolt
w/windage tray
N/A 860-234-5501 N/A
Big Block Chevy 4 bolt 860-135-5601 N/A 860-135-5201
Big Block Chevy 4 bolt
w/windage tray
N/A 860-235-5701 N/A
Big Block Chevy 2 bolt
w/windage tray
860-135-5402 860-235-5502 860-135-5002
Ford 289-302 2 bolt 860-154-5401 N/A 860-154-5001