ARP 206-4204 Cylinder Head Stud Kit Chrome Moly - 8740 12-Point

The ARP 206-4204 is a professional-grade cylinder head stud kit featuring 11 pieces manufactured from premium 8740 chrome moly steel. These high-performance studs are engineered for serious engine builders who demand absolute reliability and precision in high-stress applications.

Superior Manufacturing Process:

• Precision heat-treated to 200,000 psi using vertical rack positioning for complete heat penetration
• Centerless ground after heat-treat for exceptional concentricity and straightness
• Thread rolled after heat-treat for 1000% better fatigue strength compared to pre-heat-treat threading
• 12-point head design for positive engagement and reduced wrenching clearance requirements

Key Features:

• 8740 chrome moly alloy rated superior to aircraft quality materials
• Undercut shorter studs equalize stretch for consistent clamping force
• Includes hardened parallel-ground washers for even load distribution
• Ensures perfect alignment of cylinder heads and gaskets during assembly
• Prevents head gasket failure through optimized compression compensation

Installation Advantages:

Unlike head bolts which experience torsional stress during installation, studs install finger-tight and stretch only on the vertical axis when torqued. This provides more accurate and consistent torque loading, making them ideal for racing applications requiring frequent disassembly. The precision manufacturing tolerances allow cylinder heads and gaskets to glide into position with perfect alignment.

Each stud is stamped with the ARP logo as assurance of quality. Kit includes all necessary hardened washers. Re-torque after initial engine run-in to compensate for head gasket compression.