ARP 204-4704 Cylinder Head Stud Kit Chrome Moly - 8740 12-Point

The ARP 204-4704 is a professional-grade cylinder head stud kit engineered for high-performance and racing applications. Built from premium 8740 chrome moly alloy steel and heat-treated to 200,000 psi tensile strength, these studs deliver exceptional clamping force and durability far exceeding standard fasteners.

Key Features:

• 8740 chrome moly steel construction rated at 200,000 psi tensile strength
• Vertical rack heat-treatment ensures complete and consistent heat penetration
• Centerless ground for precise concentricity and perfect alignment
• Thread rolled after heat-treat for 10x better fatigue strength
• Undercut design on shorter studs equalizes stretch for consistent clamping force
• 12-point nuts with hardened parallel-ground washers included
• Wide area flanged design allows retorquing without valve train removal

Why Studs Over Bolts:

Head studs provide superior accuracy and consistency compared to bolts because they stretch only along the vertical axis during torquing. Bolts experience both torsional and tensile loads simultaneously, which can lead to inconsistent clamping force. Studs also simplify engine assembly by ensuring perfect cylinder head and gasket alignment every time.

Manufacturing Excellence:

ARP's exacting manufacturing process sets these studs apart from competitors. Each stud is individually heat-treated in vertical racks (not bulk-processed), then centerless ground through multiple precision cuts to achieve exceptional straightness. Threads are rolled after heat-treatment, a more expensive process that dramatically improves fatigue resistance. The undercut design compensates for head gasket compression, helping prevent gasket failure and maintaining optimal sealing.

These head studs represent the gold standard trusted by professional engine builders across all forms of motorsports. Each stud is marked with the ARP stamp as assurance of zero-defect quality and manufacturing precision.