Part Number: 203-5409

Description: B58B30 Main Stud Kit

Fitment: 20+ Toyota Supra 3.0T

Details:

• Prevents main cap walk and fretting

• Protects engine block threads

• Includes hardened washers and high-quality nuts

• 8740 chrome moly steel studs with 190,000 psi tensile strength

• Precision J-form rolled threads for superior durability

Product Details
ARP main stud kits are engineered to provide maximum strength and reliability for high-performance engines. Each kit includes hardened parallel-ground washers and high-quality nuts to ensure secure installation. The studs are made from 8740 chrome moly steel and heat-treated in-house to 190,000 psi tensile strength. Precision J-form threads are rolled after heat treatment, creating a fastener with threads over 2,000% stronger than conventional studs. These kits help eliminate main cap walk and fretting while protecting the threads in the engine block, making them essential for enthusiasts and builders upgrading their 2020+ Toyota GR Supra engines.