Header Stud Kit - 6pt. 3/8 KB Hemi

The ARP Header Stud Kit - 6pt. 3/8 KB Hemi is designed for serious engine builders and high-performance Hemi enthusiasts who require reliability under extreme conditions. This kit replaces factory bolts to prevent issues such as bolt stretch, leakage, and catastrophic header gasket failure, which are critical concerns when operating under elevated boost, nitrous, or sustained high RPM.

Engineered from proprietary chrome-moly alloy, ARP studs feature a 6-point head design that offers superior holding power compared to standard 12-point fasteners. The 3/8-inch diameter is optimized for the Hemi engine platform, ensuring resistance to thermal cycling and vibration that can degrade conventional hardware. Each stud is individually tested to exacting tolerances, providing consistent preload across all fastening points and preventing uneven clamping that leads to header leaks.

This kit is essential for anyone upgrading Hemi headers or rebuilding an engine intended for street strip duty, forced induction, or naturally aspirated performance builds. Installation involves removing the factory exhaust manifold and replacing the original bolts with ARP studs, followed by using a torque wrench to achieve the specified torque settings.