ARP 235-4312 High Performance Cylinder Head Stud Kit Chrome Moly - 8740 12-Point

The ARP 235-4312 is a premium cylinder head stud kit engineered for high-performance and racing applications. Manufactured from ARP's proprietary 8740 chrome moly alloy, these studs are heat-treated to 200,000 psi tensile strength, exceeding aircraft-grade specifications and providing exceptional clamping force and reliability under extreme cylinder pressures.

Superior Manufacturing Process:

• Premium 8740 chrome moly alloy rated at 200,000 psi tensile strength
• Vertical rack heat-treatment ensures complete and uniform heat penetration
• Centerless ground construction for exceptional concentricity and straightness
• Thread rolled after heat-treat for 10x better fatigue strength than pre-heat-treat threading
• 12-point head design for precise torque application
• Includes hardened parallel-ground washers for even load distribution

Performance Benefits:

• Provides more accurate and consistent torque loading compared to bolts
• Studs stretch only on vertical axis during installation, eliminating torsional stress
• Specially undercut shorter studs equalize stretch for uniform clamping force
• Prevents head gasket failures by compensating for gasket compression
• Precision tolerances allow cylinder heads and gaskets to align perfectly during assembly
• Wide area flanged head eliminates need for valve train removal during retorquing

ARP Pro Series head studs are the choice of professional engine builders across all forms of motorsports. Each stud is stamped with the ARP logo as assurance of quality and is backed by ARP's zero-defect quality standard. These fasteners are designed for competition applications where maximum reliability and performance are essential.

Installation Note: Studs should be installed finger-tight in a relaxed mode. After initial torquing and engine run-in, re-torque fasteners to compensate for head gasket compression.