Exhaust Manifold Header for GMC Yukon Sierra, Chevy Avalanche Silverado Suburban 1500, Tahoe

• 4-1 Shorty Style off-road headers
• Direct Replacement of Factory Header
• Increase high flow air, instantly gain 10 to 15 Hp. / Tq.
• TIG welded CNC machine flange
• Metal gasket included
• Installation Instruction Not Included
• Professional Installation Recommended

The exhaust manifolds found in the 2002-2011 Chevrolet / GMC Pickups and SUVs were designed to combine the exhaust gasses from each of the cylinders quickly with a manifold that was cost effective to produce. Our 4-1 Shorty Style off-road headers are designed to allow the exhaust gasses to flow more freely from each 4 cylinder bank and combine in a more efficient manner. Tubing has been optimized for the 4.8L and 5.3L engines. This creates a reduction in cylinder backpressure and improved exhaust gas velocity. These improvements free up lost horsepower and torque. An added benefit is a more performance oriented exhaust sound.