1.625-Inch Primary Shorty Exhaust Header

The Doug's D3320-B is a shorty exhaust header engineered to provide a performance upgrade over restrictive stock manifolds. Designed as a direct bolt-on replacement where underhood clearance is limited, it improves exhaust flow and can free up horsepower. The header is constructed from durable 16-gauge steel tubing with 0.375-inch thick machined flanges to prevent warping. Its CNC mandrel-bent tubes ensure an accurate fit and optimal flow. Key specifications include 1.625-inch primary tubing diameter, a 3-inch round port collector diameter, and a 3-bolt flange collector attachment. The header is finished with a durable, matte Hi-Temp Black Coating, offering protection against rust and corrosion while providing a subtle, aggressive style. This header includes a fitting to accept the stock O2 sensor and comes with both gaskets and mounting hardware for a straightforward installation. It is specifically designed for 1982-1992 Chevrolet Camaro and Pontiac Firebird models equipped with Small Block V8 engines (5.0L 305ci, 5.7L 350ci). Please note that this header is legal for off-highway use only, excluding California or states using California emission standards. It is intended for vehicles produced before emissions control regulations or for closed-course competition use. Always consult the manufacturer's application guide and installation instructions for proper fitment and legal compliance.