The Walker Exhaust 17664 4.25" x 16" Oval Aluminized Steel Exhaust Muffler is engineered to provide reliable performance and durability for commercial and heavy-duty vehicles. Constructed from aluminized steel, this muffler offers enhanced resistance to corrosion, extending its service life and reducing maintenance costs. The internal drainage system effectively minimizes moisture accumulation, further protecting against rust and deterioration. Designed with internal partitions and mechanically joined tubes, the muffler accommodates expansion and contraction due to temperature fluctuations, thereby reducing distortion and maintaining structural integrity. Spun-locked heads and OE-style spot welds contribute to the overall stability and longevity of the muffler. The louvered tube design ensures a factory-style sound quality, effectively reducing radiated noise compared to straight perforated tubes. This feature is particularly beneficial for fleets aiming to maintain a consistent and acceptable noise level across their operations. The muffler's customizable design includes expandable bushings, facilitating easier fitment and potentially reducing installation time. However, some installations may require specialized fabrication or welding, depending on the specific vehicle application. By incorporating the Walker Exhaust 17664 muffler into your fleet, you can expect improved operational efficiency through reduced downtime and maintenance expenses, as well as enhanced driver comfort due to consistent noise levels.