The Walker 21201 Quiet-Flow Exhaust Muffler is engineered to provide a precise fit and superior performance for specific Ford and Mercury models, including the 2007-2004 Ford Freestar, 2003-1995 Ford Windstar, and 2007-2004 Mercury Monterey. Constructed with 100% stainless steel, this muffler offers enhanced durability and resistance to corrosion compared to traditional aluminized mufflers. The internal drainage system effectively reduces moisture accumulation, mitigating the risk of rust and extending the product's lifespan. Designed for easy installation, the muffler features OE-style hangers, brackets, and pipe routings, allowing for a direct-fit bolt-on replacement without the need for specialized fabrication or welding. This user-friendly design minimizes downtime and labor costs, ensuring a seamless integration into existing exhaust systems. The internal partitions and mechanically joined tubes accommodate expansion and contraction during temperature fluctuations, reducing distortion and maintaining structural integrity over time. Spun-locked heads and OE-style spot welds further enhance stability and contribute to the muffler's longevity. For optimal acoustic performance, the muffler incorporates 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 the design, ensuring consistent and reliable performance. Backed by Walker's limited lifetime warranty and exclusive 90-Day Safe and Sound® Guarantee, the 21201 Quiet-Flow Exhaust Muffler offers fleet operators a reliable and cost-effective solution to maintain vehicle performance and compliance with noise regulations.