ARP 254-4112 Cylinder Head Stud Kit Chrome Moly Steel - 8740

The ARP 254-4112 Pro Series head stud kit delivers professional-grade clamping force and reliability for high-performance and competition engines. Engineered with premium 8740 chrome moly steel, these studs are heat-treated to 200,000 psi and manufactured to exacting tolerances that ensure precise alignment and consistent torque loading.

Premium Manufacturing Process:

• 8740 chrome moly alloy heat-treated to 200,000 psi for exceptional strength
• Vertical heat-treat process ensures complete penetration and uniform strength
• Centerless ground after heat-treat for near-perfect concentricity
• Thread rolled after heat-treat for 10x better fatigue strength
• Undercut short studs equalize stretch for more consistent clamping force

Key Benefits:

• Hex head design allows for easy installation and torquing
• Superior alignment ensures cylinder heads and gaskets glide into position
• Studs stretch only on vertical axis during torquing for more accurate load distribution
• Reduces risk of head gasket failure through optimized clamping force
• Includes hardened parallel-ground washers for even load distribution

Each stud is stamped with the ARP logo as assurance of quality. This kit represents the same fastener technology relied upon by top professional engine builders in all forms of motorsports competition. Perfect for racers and enthusiasts who demand zero-defect, zero-failure performance from their engine components.

Note: Re-torque studs after initial engine run-in as head gaskets will compress during break-in period.