ARP 135-5402 Main Stud Kit Chrome Moly - 2-Bolt

The ARP 135-5402 2-Bolt Main Stud Kit delivers superior clamping force and reliability for high-performance engine builds. Engineered to eliminate main cap walk and fretting while protecting engine block threads, this kit provides the foundation for serious power applications. Each stud is manufactured from premium 8740 chrome moly steel and heat-treated to an impressive 200,000 psi tensile strength—significantly stronger than Grade 8 hardware.

Key Features:

• 8740 chrome moly steel construction heat-treated to 200,000 psi tensile strength
• J-form threads rolled after heat-treat for 1000% greater thread strength
• Includes hardened parallel-ground washers and aerospace quality nuts
• Provides more accurate torque readings compared to bolts—no twisting into block
• Reduces stress on block threads, extending engine life (critical for aluminum blocks)
• Ensures proper cap alignment and easier engine assembly every time
• All clamping forces concentrated on single axis for optimal performance

ARP main studs are the preferred choice of professional engine builders who demand precision and reliability. By using studs instead of bolts, you achieve superior clamping consistency and protect your investment in high-performance engine components.