ARP 234-4722 Cylinder Head Stud Kit Chrome Moly - 8740 12-Point

The ARP 234-4722 is a professional-grade cylinder head stud kit engineered for high-performance and competition engines. Manufactured from premium 8740 chrome moly steel, these studs are heat-treated to an impressive 200,000 psi tensile strength, providing superior clamping force and reliability under extreme conditions.

Advanced Manufacturing Process:

• Precision heat-treated vertically in specialized racks for complete and uniform heat penetration
• Centerless ground after heat-treat for exceptional concentricity and straightness
• Thread rolled after heat-treatment for approximately 1000% better fatigue strength compared to pre-heat-treat threading
• Undercut design on shorter studs equalizes stretch for more consistent clamping force

Key Features:

• Premium 8740 chrome moly alloy rated at 200,000 psi
• 12-point head design for improved wrench engagement
• Wide area flanged heads eliminate need for valve train removal during retorquing
• Includes hardened parallel-ground washers for even load distribution and accurate torque readings
• Undercut studs compensate for head gasket compression to help prevent gasket failures

Why Studs Over Bolts: Studs provide superior alignment of cylinder heads and gaskets during assembly, and deliver more accurate torque loading since they stretch only on the vertical axis without the twisting forces that bolts experience. This results in more consistent and reliable clamping force, making them the preferred choice of professional engine builders.

Each stud is manufactured to exacting tolerances, allowing cylinder heads and gaskets to glide into position with perfect alignment. ARP's rigorous quality control ensures zero-defect, zero-failure performance in the most demanding racing applications.