Header Bolt Kit 3/8in Zinc Set Of 12

The Header Bolt Kit 3/8in Zinc Set Of 12 is a critical fastener assembly engineered for high-temperature exhaust manifold and header installations. Whether you're upgrading a street performance engine, rebuilding a race application, or restoring a classic muscle car, this bolt kit provides the corrosion-resistant fastening solution that factory hardware often cannot match. Headers require bolts that withstand thermal cycling, vibration, and the aggressive chemistry of hot exhaust gases—making quality hardware non-negotiable for reliability and longevity.

Manufactured by Racing Power Co-Packaged, this header bolt kit features zinc-plated fasteners that resist rust and oxidation far better than bare steel, especially critical when subjected to the extreme heat cycling of exhaust manifolds. The 3/8-inch diameter specification is the industry standard for most small-block and mid-size V8 header flanges, delivering secure, repeatable clamping force across the gasket interface. The set of 12 bolts ensures you have complete coverage for a typical four-cylinder header or dual-manifold V8 application, with spares for future projects or replacements. Zinc plating not only extends service life but also prevents seized fasteners—a common headache when heat-damaged fasteners must be drilled out.

This header bolt kit benefits street rodders, performance enthusiasts, and mechanics who demand professional-grade fastening for exhaust system work. It suits both naturally aspirated and forced-induction builds where header gasket integrity directly impacts exhaust flow efficiency and combustion sealing. Installation is straightforward: torque in a star pattern to manufacturer specs (typically 25–35 ft-lbs depending on engine type) to ensure even gasket compression and prevent warping. Keep a set on hand for header re-gaskets, replacements, or any exhaust manifold service where original hardware has corroded or failed due to thermal fatigue.