ARP 234-4336 Cylinder Head Stud Kit Chrome Moly - 8740 12-Point

The ARP 234-4336 is a high-performance cylinder head stud kit engineered for serious engine builders who demand maximum reliability and clamping force. Built from premium 8740 chrome moly steel and heat-treated to 200,000 psi, these studs deliver superior strength and durability compared to standard head bolts.

Key Features:

• Premium 8740 chrome moly alloy rated at 200,000 psi tensile strength
• 12-point head design for precise torque application
• Vertical rack heat-treatment ensures complete and uniform heat penetration
• Centerless ground after heat-treat for exceptional concentricity and straightness
• Thread rolled after heat-treatment for 10x better fatigue strength
• Undercut short studs equalize stretch for more consistent clamping force
• Includes hardened, parallel-ground washers for even load distribution
• Wide-area flanged head eliminates need for valve train removal during retorquing

Why Choose Studs Over Bolts:

Head studs provide superior clamping accuracy because they stretch only on the vertical axis when torqued, unlike bolts which experience both torsional and tensile stress simultaneously. This results in more accurate and consistent torque readings, better head gasket sealing, and easier engine assembly with assured cylinder head and gasket alignment.

Manufacturing Excellence:

Each ARP stud undergoes precision centerless grinding involving multiple passes to achieve near-perfect concentricity. This exacting process ensures cylinder heads and gaskets glide into position with perfect alignment. The post-heat-treat thread rolling process, while more expensive and demanding on tooling, produces dramatically superior fatigue resistance compared to pre-heat-treat threading used by other manufacturers.

ARP Pro Series studs are the choice of professional engine builders across all racing disciplines, delivering the quality and reliability needed for high-performance and competition applications.