The BBK 99-04 GM Truck SUV 4.8 5.3 Shorty Tuned Length Exhaust Headers are high-performance direct fit replacements designed to enhance exhaust flow and engine output. Constructed from 1-5/8 inch CNC mandrel bent tubing, these headers provide unrestricted exhaust flow, increasing horsepower and torque beyond factory OEM manifolds. The tuned length design improves scavenging waves for more efficient combustion, resulting in better performance and fuel economy compared to stock or equal length headers. Featuring a 3/8 inch laser cut flange for added strength and a guaranteed leak-free fit, these headers are robotically and precision hand welded, then pressure tested to ensure durability and long-term reliability. They come finished in a polished silver ceramic coating for corrosion resistance and include all necessary hardware for installation.
These headers are engineered specifically for 1999 to 2004 GM trucks and SUVs equipped with 4.8L and 5.3L engines, providing a direct bolt-on replacement for factory exhaust manifolds. Installation requires transferring the factory OE doughnut gasket from the passenger side manifold to the BBK header to ensure proper mid-pipe fitment and sealing. The kit includes new exhaust header gaskets, bolts, and hardware to complete the upgrade. Ideal for street and light performance applications, these headers improve power delivery and efficiency while maintaining a straightforward installation process for daily drivers and enthusiasts alike.
