The Walker Exhaust 21683 Quiet-Flow SS Exhaust Muffler is engineered to provide a durable and efficient solution for noise reduction in heavy-duty vehicles. Constructed entirely from corrosion-resistant stainless steel, this muffler offers superior longevity compared to traditional aluminized models. Its internal drainage system effectively minimizes moisture accumulation, thereby extending the service life of the exhaust system. Designed for a precise fit, the muffler features OE-style hangers, brackets, and pipe routings, facilitating straightforward installation without the need for specialized fabrication or welding. The internal design includes partitions and mechanically joined tubes that accommodate expansion and contraction during temperature fluctuations, reducing distortion and enhancing structural integrity. Spun-locked heads and OE-style spot welds further contribute to the muffler's stability and durability. Acoustic performance is optimized through OE-style louvered tubes that lower noise levels, while domed heads help reduce radiated noise, delivering a premium factory-style sound quality. The muffler's overall dimensions are 24 inches in length, 6 inches in height, and 11.5 inches in width, with an inlet diameter of 2.5 inches and an outlet diameter of 2.25 inches. It is designed for specific vehicle applications, including various models of Buick Enclave, Chevrolet Traverse, GMC Acadia, and Saturn Outlook from 2007 to 2017. This product is backed by Walker's limited lifetime warranty and a 90-Day Safe and Sound Guarantee, ensuring reliable performance and customer satisfaction.