Hedman Hedders 89340 Hedman Street Headers

Hedman Street Headers (89340) offer an affordable entry into header performance without sacrificing durability. These full-length headers are designed for street-driven vehicles where low-end torque and mid-range power matter most. Constructed from 14-gauge mandrel-bent steel they provide a noticeable improvement over restrictive factory manifolds on small-block and big-block applications. Gains of 10-18 hp are typical with torque concentrated in the 2,000-4,500 rpm range.

Primary tube sizing is application-specific at 1.5 or 1.625 inches matched to engine displacement and chassis. The 3/8-inch laser-cut flanges seal against quality gaskets. Each header is fully welded and leak-tested before shipping. Hedman's street-series coating provides basic corrosion protection. All hardware and collector gaskets are included. The 14-gauge tubing resists denting from road debris better than thinner 16-gauge alternatives. Collector sizing is 2.5 or 3.0 inches depending on application.

Bolt-in fitment for specific chassis and engine combinations. Some applications may require minor clearancing of the starter or steering shaft. Spray all hardware with anti-seize during assembly. Hedman recommends retorquing flanges after the first 500 miles. Compatible with stock exhaust Y-pipes on most applications. Check spark plug clearance on small-block Chevy applications with angle-plug heads.

Shop with confidence at GodsMods. All exhaust components listed are sourced from authorized distributors and backed by manufacturer warranties. Contact our technical team with fitment questions before ordering we verify compatibility for every application. We stand behind every product we sell with fast shipping and expert support.