Header Bolt Kit 6pt Mopar 5.7/6.1L Hemi

The ARP Header Bolt Kit 6pt Mopar 5.7/6.1L Hemi (part number 440-1101) is a premium fastener solution engineered for Gen III Hemi engine applications. This 16-piece stainless steel bolt set delivers the critical clamping force and corrosion resistance required for high-temperature exhaust manifold duty where standard hardware fails. ARP's proprietary manufacturing process ensures consistent tensile strength and dimensional accuracy—essential when sealing header joints under thermal cycling stress.

Each bolt measures 8mm × 1.25 thread pitch with a 1.181-inch length, sized specifically for Mopar Gen III Hemi header applications. The hex head design allows straightforward installation with standard socket tools, while the polished stainless finish resists oxidation and maintains appearance across multiple heat cycles. Unlike OEM zinc-plated fasteners that corrode and seize after repeated header removal, ARP stainless hardware remains serviceable for years of track use, engine rebuilds, or performance modifications without galling or thread stripping.

This kit addresses a specific pain point for 5.7L and 6.1L Hemi owners who perform frequent manifold work—whether upgrading to high-flow headers, replacing gaskets, or servicing exhaust components. The 16-bolt count covers a complete header installation without mixing batch lots or dealing with partial kits. Engine builders, performance shops, and serious enthusiasts rely on ARP fasteners to eliminate header leak failures and ensure repeatable assembly specs across multiple builds.

For Mopar Gen III Hemi platforms, header bolt quality directly impacts reliability. OEM fasteners lack the strength margin needed for modified engines or aggressive heat conditions. ARP's 8mm stainless specification provides superior clamp load retention and eliminates the corrosion failures common to coated carbon steel alternatives, making this kit a foundational upgrade for any serious Hemi project.