ARP main studs are manufactured from 8740 chrome moly steel, heat-treated to 200,000 psi tensile strength, and precision J-form threads rollad after heat-treat to create a fastener that has threads 2000% stronger than others. Reduce crankshaft flex and main cap fretting with these premium quality main studs.

Don’t settle for anything less than the best!

Main Studs Key Features:

• Premium grade 8740 chrome moly steel

• 200,000 psi tensile strength

• J-form rolled threads

• Come with parallel washers and nuts

All kits come complete with hardened parallel-ground washers and aerospace quality nuts.