ARP 234-4319 Cylinder Head Stud Kit Chrome Moly Steel - 8740 12-Point

The ARP 234-4319 is a high-performance cylinder head stud kit engineered for serious competition and high-output engines. Manufactured from premium 8740 chrome moly steel and rated at 200,000 psi tensile strength, this Pro Series kit delivers exceptional clamping force and reliability far exceeding standard head bolts.

Superior Manufacturing Process:

• Premium 8740 chrome moly alloy rated superior to aircraft quality materials
• Precision heat-treated to 200,000 psi using vertical rack process for complete heat penetration
• Centerless ground for near-perfect concentricity and straightness
• Thread rolled after heat treatment for 10x better fatigue strength
• 12-point head design for secure engagement and easy installation

Performance Benefits:

• Studs allow cylinder heads and gaskets to glide into perfect alignment during assembly
• Provide more accurate and consistent torque loading versus bolts
• Stretch only on vertical axis when torqued, eliminating rotational stress
• Undercut shorter studs equalize stretch for consistent clamping force
• Helps prevent head gasket failures and ensures optimal engine sealing

Kit Includes:

• Complete set of hardened parallel-ground washers for even load distribution
• 12-point nuts for precise torque application

Each stud is manufactured to exacting tolerances and stamped with the ARP logo as assurance of quality. The Pro Series represents the choice of professional engine builders across all forms of motorsports. For optimal performance, studs should be installed finger-tight in a relaxed mode, and re-torqued after initial engine operation to compensate for head gasket compression.