Header Stud Kit - 6pt. 3/8 x 1.670 OAL (12)

The Header Stud Kit - 6pt. 3/8 x 1.670 OAL (12) from ARP is a precision fastening solution engineered for high-performance engine builds where cylinder head integrity is non-negotiable. These studs are purpose-built for competitive shooters, engine builders, and tactical vehicle operators who demand repeatability and reliability under extreme stress conditions. Whether you're assembling a precision rifle platform, custom engine, or mission-critical equipment, ARP studs provide the clamping force consistency that separates dependable systems from field failures.

The 6-point fastener design distributes load across a larger contact surface, reducing stress concentration and preventing bolt strip-out—a critical advantage in high-vibration environments typical of tactical operations and performance applications. The 3/8-inch diameter with 1.670 inches overall length (OAL) offers optimal engagement for standard header mounting applications while maintaining clearance in tight installation spaces. ARP fasteners are manufactured to exacting tolerances using high-strength alloy steel, with each stud calibrated for consistent preload tension and superior fatigue resistance across temperature cycling and shock loads.

This 12-piece kit supplies a complete fastening solution for header assemblies on most standard platforms, making it ideal for gunsmiths, precision mechanics, and equipment technicians working on custom or high-demand builds. Installation requires proper torque specifications and a calibrated wrench—ARP recommends sequential tightening patterns to ensure even clamping pressure and eliminate movement under operational stress. The kit's compact 5.5 x 9.5-inch footprint stores efficiently in professional tool kits while remaining accessible for field maintenance and inspection.