The Walker Exhaust 21411 Quiet-Flow SS Direct Fit Exhaust Muffler is engineered to provide a precise fit and superior performance for specific vehicle applications. Constructed entirely from corrosion-resistant stainless steel, this muffler offers enhanced durability compared to traditional aluminized options. Its internal drainage system effectively reduces moisture accumulation, mitigating the risk of rust and extending the component's service life. Designed for easy installation, the muffler features OE-style hangers, brackets, and pipe routings, eliminating the need for specialized fabrication or welding. This direct-fit, bolt-on replacement ensures a seamless integration with the vehicle's existing exhaust system. The muffler's internal partitions and mechanically joined tubes accommodate expansion and contraction due to temperature fluctuations, minimizing distortion and maintaining structural integrity. Spun-locked heads and OE-style spot welds further contribute to its stability and longevity. For optimal acoustic performance, the muffler incorporates OE-style louvered tubes that 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 reliable OE-style sound. The Walker Exhaust 21411 muffler is compatible with specific Buick Rendezvous models from 2002 to 2007, providing a tailored solution for these vehicles. By choosing this muffler, fleet operators can enhance vehicle performance, reduce maintenance costs, and ensure compliance with noise regulations, thereby improving overall operational efficiency.