ARP 235-4601 Cylinder Head Stud Kit Chrome Moly - 8740 12-Point

The ARP 235-4601 Pro Series head stud kit represents the gold standard in cylinder head fastening systems for high-performance and racing engines. Engineered with premium 8740 chrome moly steel and rated at 200,000 psi tensile strength, these studs deliver exceptional clamping force and reliability under extreme combustion pressures.

Advanced Manufacturing Process:

• Premium 8740 chrome moly alloy exceeding aircraft quality standards
• Vertical rack heat treatment to 200,000 psi for complete penetration
• Centerless grinding for near-perfect concentricity and straightness
• Thread rolling performed after heat treatment for 10x better fatigue strength
• Undercut shorter studs for equalized stretch and consistent clamping force

Performance Benefits:

• 12-point head design for precise torque application
• Wide-area flanged heads eliminate valve train removal for retorquing
• Superior alignment allows cylinder heads and gaskets to glide into position
• Hardened parallel-ground washers included for even load distribution
• Undercut design compensates for head gasket compression to prevent failures

ARP studs provide more accurate torque loading compared to bolts because they stretch only on the vertical axis during installation, without the twisting forces that affect bolts. Each stud is stamped with the ARP logo as assurance of quality and is backed by ARP's zero-defect quality standard. Ideal for professional engine builders and serious enthusiasts who demand maximum reliability and performance.