ARP 401-4701 Head Stud Kit

The ARP 401-4701 Head Stud Kit is engineered to provide superior cylinder head clamping force and reliability for high-performance and racing applications. ARP head studs are manufactured from premium 8740 chromoly steel, heat-treated to 190,000 psi tensile strength for exceptional strength and durability.

Key Features:

• Precision CNC-machined threads rolled after heat treatment for superior fatigue resistance
• Studs provide more accurate and consistent torque loading compared to head bolts
• Allows cylinder head to expand and contract freely, reducing stress and warping
• Includes hardened parallel-ground washers for even load distribution
• Complete kit with high-performance ARP Ultra-Torque fastener assembly lubricant
• Exceeds OEM specifications for strength and reliability

ARP head studs are the preferred choice of professional engine builders and racers worldwide. By replacing factory head bolts with this premium stud kit, you'll achieve more reliable head gasket sealing, especially in boosted or high-compression applications. Each kit includes studs, nuts, washers, and assembly lubricant for complete installation.