The Walker 21422 Quiet-Flow™ Stainless Steel Oval Aluminized Exhaust Muffler is engineered to provide superior performance and durability for commercial vehicle fleets. Designed with a 2.25" inlet and outlet, and a 24" body length, this muffler features an offset-offset configuration, ensuring a precise fit and optimal exhaust flow. Constructed from 100% corrosion-resistant stainless steel, it offers a lifespan significantly longer than traditional aluminized mufflers, effectively reducing maintenance costs and downtime. The internal drainage system minimizes moisture accumulation, further enhancing its longevity. Installation is straightforward, thanks to the direct-fit bolt-on design with OE-style hangers, brackets, and pipe routings, eliminating the need for specialized fabrication or welding. The muffler's internal partitions and mechanically joined tubes allow for expansion and contraction during temperature fluctuations, minimizing distortion and maintaining structural integrity. Spun-locked heads and OE-style spot welds provide additional stability, contributing to a longer service life. For acoustic control, the muffler utilizes OE-style louvered tubes to lower noise levels, while OE-style domed heads help reduce radiated noise, delivering a premium factory-style sound quality. Acoustic and flow testing validate the internal design, ensuring consistent performance. Backed by Walker's limited lifetime warranty and exclusive 90-Day Safe and Sound® Guarantee, the 21422 muffler is a reliable choice for fleet operators seeking to enhance vehicle performance and reduce operational costs.