Coated Header - 99-07 GM P/U 4.8/5.3/6.0L

The Coated Header – 99-07 GM P/U 4.8/5.3/6.0L from Hedman is a direct-fit performance exhaust header engineered for 1999–2007 GM full-size pickup trucks and SUVs equipped with LS-series V8 engines. Built for truck owners and mechanics who demand improved exhaust scavenging, this header replaces the factory restrictive manifold and unlocks measurable horsepower and torque gains while reducing under-hood heat. Whether you're building a weekend warrior or seeking reliable daily-driver bolt-on performance, this header delivers the foundational upgrade every LS-powered truck needs.

Constructed from mandrel-bent steel tubing with a 1.625-inch primary diameter, the Coated Header maximizes exhaust gas velocity and minimizes turbulence—critical for LS-series engines where cylinder scavenging efficiency directly impacts power output. The metallic ceramic coating resists thermal degradation, reduces radiant heat, and protects against corrosion and oxidation, ensuring long-term durability in harsh underbody environments. A stock collector flange maintains compatibility with OEM or aftermarket exhaust systems, while included gaskets and hardware eliminate guesswork during installation. This pair configuration covers both banks of the V8, providing symmetric flow for balanced performance.

Mechanics and truck enthusiasts working with 4.8L, 5.3L, or 6.0L LS engines will find this header ideal for naturally aspirated builds, bolt-on upgrade packages, or foundation work before turbo or supercharger installation. The direct fit means no custom fabrication, reducing labor time and installation complexity. Weighing 21.3 pounds, the header integrates seamlessly into stock and modified truck platforms without requiring frame modifications or exhaust system redesign. This is the street-class header that serious truck builders trust for consistent, reliable performance gains.