The Walker Exhaust 17313 is a 13-inch aluminized steel mandrel-bent dual cat-back exhaust system featuring a Super Turbo muffler. Designed for 1999-2004 Ford F-250 and F-350 models equipped with 5.4L V8 or 6.8L V10 engines, this system enhances exhaust flow and performance. The aluminized steel construction offers superior corrosion resistance, extending the system's lifespan. The mandrel-bent pipes ensure smooth exhaust flow, reducing backpressure and improving engine efficiency. The Super Turbo muffler channels exhaust flow, reduces turbulence, and absorbs unwanted interior resonance, resulting in a mellow tone. This system includes all necessary components for a complete installation, such as pipes, hangers, clamps, and cable ties, facilitating a straightforward, bolt-on replacement without the need for specialized fabrication or welding. The system is engineered to fit 137-inch, 142-inch, 156-inch, 158-inch, and 172-inch wheelbases, excluding chassis cab models. The dual 2.5-inch straight-cut tailpipes exit in the rear on either side of the license plate, providing a clean and aggressive appearance. The aluminized steel construction of the muffler and pipes reduces corrosion, while the internal drainage system minimizes moisture collection, enhancing durability. The system is backed by a limited lifetime warranty and a 90-Day Performance & Sound Guarantee, ensuring long-term satisfaction and performance.