3/8 to 5/16-24 x 1.750 Stepped Header Stud

The 3/8 to 5/16-24 x 1.750 Stepped Header Stud is designed for high-performance engine builders and mechanics who require precision fastening in critical exhaust manifold and header applications. These stepped studs address the challenge of achieving consistent clamping loads across varying bolt diameters while maintaining structural integrity and effective gasket sealing.

This product features a transition from a 3/8-inch diameter shank to a 5/16-24 thread pitch, with a total length of 1.750 inches. This configuration is specifically designed to fit factory or custom header flanges where bolt hole sizes differ or where space limitations restrict the use of standard fasteners. The manufacturing process ensures uniform material strength and corrosion resistance, which are essential in the high-heat environment of exhaust systems.

Performance mechanics and engine builders trust ARP stepped header studs for both small-block and big-block applications, especially when header fitment requires non-standard fastening solutions. These studs provide reliable, repeatable assembly that withstands thermal cycling and vibration, reducing the risk of gasket blow-out, manifold warping, or stud breakage during engine operation.