ARP 244-4300 Cylinder Head Stud Kit Chrome Moly - 8740 12-Point

The ARP 244-4300 is a professional-grade cylinder head stud kit designed for high-performance and racing applications. Manufactured from premium 8740 chrome moly steel and heat-treated to 200,000 psi tensile strength, these studs deliver exceptional clamping force and reliability under extreme conditions.

Key Features:

• Premium 8740 chrome moly steel construction rated at 200,000 psi
• 12-point head design for secure engagement and easy installation
• Vertical rack heat-treatment ensures complete and uniform heat penetration
• Centerless ground after heat-treat for superior concentricity and straightness
• Thread rolled after heat-treatment for 10x better fatigue strength
• Includes hardened parallel-ground washers for even load distribution
• Undercut shorter studs (where applicable) equalize stretch for consistent clamping force

Why Studs Over Bolts:

Head studs provide superior clamping accuracy compared to bolts because they stretch only along the vertical axis during torquing. Bolts experience both torsional and tensile forces simultaneously, making torque readings less consistent. Studs also simplify engine assembly by allowing cylinder heads and gaskets to align properly without fighting fastener interference.

Installation Notes:

Install studs finger-tight in a relaxed mode—never crank them in using a jammed nut. Apply torque only to the nut, allowing the stud to stretch purely on the vertical axis. Re-torque after initial engine run-in to compensate for head gasket compression.

ARP Pro Series head studs are the choice of professional engine builders across all forms of racing, delivering zero-defect quality and maximum reliability for competition powerplants.