ARP 235-4502 Cylinder Head Stud Kit Chrome Moly - 8740

The ARP 235-4502 head stud kit delivers professional-grade engine fastening performance using premium 8740 chrome moly steel construction. Designed for high-performance and competition engines, these studs are precision-engineered to provide superior clamping force and exceptional reliability under extreme conditions.

Advanced Manufacturing Process:

• Premium 8740 chrome moly alloy rated at 200,000 psi tensile strength
• Vertical rack heat-treating ensures complete and uniform heat penetration throughout each stud
• Centerless grinding creates near-perfect concentricity for precise alignment
• Thread rolling performed after heat-treat for approximately 1000% better fatigue strength
• Undercut design on shorter studs equalizes stretch for consistent clamping force

Performance Benefits:

• Studs allow cylinder heads and gaskets to align effortlessly during assembly
• Provides more accurate and consistent torque loading compared to bolts
• Vertical-only stretch eliminates the twisting forces present when using bolts
• Undercut studs compensate for head gasket compression to help prevent gasket failure
• Hex head design with hardened parallel-ground washers included

Each stud is manufactured to exacting tolerances that exceed aircraft quality standards. The precision centerless grinding process and post-heat-treat thread rolling represent industry-leading manufacturing practices that result in fasteners trusted by top professional engine builders across all forms of motorsports. ARP stamping on each stud verifies authenticity and quality assurance.