ARP 124-4202 High Performance Cylinder Head Stud Kit Chrome Moly Steel - 8740

The ARP 124-4202 cylinder head stud kit delivers professional-grade fastening performance using premium 8740 chrome moly steel rated at 200,000 psi tensile strength. Designed for high-performance and competition engines, this complete stud kit features 12-point heads and includes hardened parallel-ground washers for even load distribution and accurate torque readings.

Superior Manufacturing Process:

• Premium 8740 alloy steel heat-treated to 200,000 psi using vertical rack placement for complete, uniform heat penetration
• Centerless ground construction ensures exceptional concentricity and straightness for perfect alignment during assembly
• Thread rolled after heat-treat for approximately 1000% better fatigue strength compared to pre-heat-treat threading
• 12-point head design with wide area flange eliminates need for valve train removal during retorquing
• Undercut shorter studs (where applicable) equalize stretch and provide more consistent clamping force

Key Benefits:

• Superior clamping force consistency compared to standard head bolts
• Cylinder heads and gaskets align perfectly and glide into position during installation
• Reduces risk of head gasket failure through optimized stretch characteristics
• Easier engine assembly and disassembly for racing and performance applications
• Studs stretch only on vertical axis during torquing, eliminating torsional loading found with bolts

Each ARP stud is stamped with the ARP logo as assurance of quality and meets ARP's zero-defect quality standard. Complete kit includes all necessary fasteners and hardened washers. Note that studs should be installed finger-tight in a relaxed mode, and all fasteners should be re-torqued after initial engine break-in as head gaskets compress.