ARP 235-4319 Cylinder Head Stud Kit Chrome Moly - 8740 12-Point

The ARP 235-4319 head stud kit delivers professional-grade engine fastening performance using premium 8740 chrome moly alloy rated at 200,000 psi. These high-performance studs are engineered for competition and high-output applications where maximum clamping force and reliability are essential.

Superior Manufacturing Process:

• Premium 8740 chrome moly steel construction rated at 200,000 psi tensile strength
• Vertical rack heat-treating ensures complete and uniform heat penetration throughout each stud
• Centerless ground to exacting tolerances for near-perfect concentricity and straightness
• Thread rolled after heat-treat for approximately 1000% better fatigue strength than pre-heat-treat threading
• 12-point head design for secure engagement and ease of installation

Performance Benefits:

• Provides more accurate and consistent torque loading compared to head bolts
• Eliminates twisting forces during installation—studs stretch only on the vertical axis when torqued
• Precision tolerances allow cylinder heads and gaskets to align perfectly during assembly
• Undercut short studs (where applicable) equalize stretch for more consistent clamping force
• Helps prevent head gasket failures and ensures optimal engine sealing
• Includes hardened parallel-ground washers for even load distribution

Each stud is manufactured to ARP's zero-defect quality standard and stamped with the ARP logo for authenticity. The kit includes all necessary fasteners and washers for a complete installation. Ideal for professional engine builders, racers, and performance enthusiasts who demand the highest quality cylinder head fastening solution.

Installation Note: Studs should be installed finger-tight in a relaxed mode, never cranked in using a jammed nut. Re-torque after initial engine run to compensate for head gasket compression.