ARP 190-4305 Cylinder Head Stud Kit Chrome Moly - 8740 12-Point

The ARP 190-4305 is a high-performance cylinder head stud kit engineered for serious engine builders who demand absolute reliability. Manufactured from premium 8740 chrome moly steel and rated at 200,000 psi tensile strength, these studs deliver superior clamping force and fatigue resistance for high-performance and racing applications.

Advanced Manufacturing Process:

• Premium 8740 chrome moly alloy heat-treated to 200,000 psi using vertical rack process for complete heat penetration
• Centerless ground after heat-treat for exceptional concentricity and straightness
• Thread rolled after heat-treat for 10x better fatigue strength compared to pre-heat-treat threading
• 12-point head design for precise torque application
• Undercut shorter studs equalize stretch for more consistent clamping force

Performance Advantages:

• Studs provide more accurate and consistent torque loading than bolts
• Installation in relaxed mode eliminates torsional stress during assembly
• Ensures perfect alignment of cylinder heads and gaskets
• Hardened parallel-ground washers included for even load distribution
• Helps prevent head gasket failure through optimized clamping characteristics

ARP studs are the choice of professional engine builders across all racing disciplines. Each stud is stamped with the ARP logo as assurance of zero-defect quality standards. The precision manufacturing tolerances allow cylinder heads and gaskets to glide into position with perfect alignment during assembly.

Note: Studs should be installed finger-tight in a relaxed mode. Always re-torque after initial engine run-in to compensate for head gasket compression.