ARP 202-4305 Custom Age Head Stud Kit - 625+

The ARP 202-4305 head stud kit is engineered for extreme performance applications requiring superior clamping force and reliability. Part of ARP's Custom Age 625+ series, this kit delivers the ultimate in fastener technology for demanding competition and high-performance builds.

Premium Manufacturing Process:

• Constructed from premium grade 8740 chrome moly steel alloy rated at 200,000 psi tensile strength
• Vertical rack heat-treatment ensures complete and uniform heat penetration throughout each stud
• Centerless ground to exacting tolerances for near-perfect concentricity and straightness
• Thread rolling performed after heat-treatment for approximately 1000% better fatigue strength
• Precision manufacturing allows cylinder heads and gaskets to align perfectly during installation

Performance Advantages:

• Specially undercut short studs equalize stretch characteristics for more consistent clamping force
• Compensates for head gasket compression to help prevent blown gaskets
• Provides superior vertical-axis loading compared to traditional head bolts
• Eliminates twisting forces during torquing for more accurate and repeatable clamping loads
• Easier engine assembly with assured proper head and gasket alignment

Kit Includes:

• Premium 8740 chrome moly head studs
• Hardened parallel-ground washers for even load distribution
• High-quality nuts for proper torque application

Each stud is marked with the ARP stamp as assurance of quality and authenticity. Trusted by professional engine builders across all forms of racing, ARP fasteners represent the industry standard for competition powerplants. Note that cylinder heads must be re-torqued after initial engine run-in to compensate for gasket compression.