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

The ARP Header Stud Kit - 6pt. 3/8 KB Hemi (MPN 245-1311) is a precision fastener system engineered for high-performance Mopar V8 engine builds. These 3/8-inch diameter studs are specifically designed for header applications on 6-point KB Hemi engines, where secure, reliable fastening under extreme combustion pressures and thermal cycling is non-negotiable. ARP's chromoly construction with black oxide finish ensures durability and corrosion resistance in the demanding under-hood environment.

Each stud measures 1.67 to 2 inches in length and comes with matching hex nuts, providing a complete fastening solution. The chromoly material offers superior tensile strength compared to standard steel, critical for maintaining clamp load consistency across repeated heat cycles. The black oxide finish resists oxidation and provides a professional appearance on engine bays. This 16-piece set covers a full header application for KB Hemi V8 platforms, eliminating the need to source fasteners from multiple suppliers.

Builders and engine shops working on Mopar V8 restorations, performance upgrades, or competition engines rely on ARP header studs to prevent fastener relaxation and blowout—common failure points in stock fastening systems. The 3/8-inch diameter and chromoly specification are engineered to the stress requirements of modern Hemi induction systems. Whether assembling a show engine, a street performance build, or a race-prep platform, proper header fastening is foundational to long-term reliability.

ARP fasteners are the industry standard in high-performance engine building, with decades of validation in both OEM and aftermarket applications. For Mopar V8 builders seeking fasteners that match the precision and durability of premium engine components, the Header Stud Kit - 6pt. 3/8 KB Hemi delivers proven performance and peace of mind.