The Walker Exhaust 21737 muffler is engineered to provide superior performance and durability for commercial vehicles. Constructed with 100% corrosion-resistant stainless steel, this muffler offers a longer service life compared to traditional aluminized mufflers. Its internal drainage system effectively reduces moisture accumulation, mitigating the risk of rust and extending the component's lifespan. Designed with internal partitions and mechanically joined tubes, the muffler accommodates expansion and contraction due to temperature fluctuations, minimizing distortion and enhancing structural integrity. Spun-locked heads and OE-style spot welds further contribute to its stability and longevity. The muffler features OE-style louvered tubes that effectively lower noise levels, while OE-style domed heads help reduce radiated noise, delivering a premium factory-style sound quality. Acoustic and flow testing validate its design, ensuring consistent performance and OE-style sound. With dimensions of 27.75" in overall length, 9" in body height, 14" in body length, and 7" in body width, the muffler is designed for a precise fit in various commercial vehicle applications. Its inlet measures 2.00" in diameter with an offset configuration, and the outlet is 3.00" in diameter, facilitating efficient exhaust flow. The muffler's oval shape and natural finish provide a sleek appearance that complements the vehicle's underbody. This direct-fit, bolt-on replacement solution includes OE-style hangers, brackets, and pipe routings, ensuring easy installation without the need for specialized fabrication or welding. By integrating the Walker Exhaust 21737 muffler into your fleet, you can enhance operational efficiency through improved engine performance, reduced maintenance costs, and prolonged vehicle lifespan.