The Walker Exhaust 21498 Quiet-Flow SS Exhaust Muffler is engineered to provide superior performance and durability for commercial vehicle applications. Constructed entirely from corrosion-resistant stainless steel, this muffler offers a longer service life compared to traditional aluminized mufflers. Its internal drainage system effectively reduces moisture accumulation, mitigating the risk of corrosion and extending the component's lifespan. Designed for easy installation, the muffler features a direct-fit bolt-on replacement solution with OE-style hangers, brackets, and pipe routings, eliminating the need for specialized fabrication or welding. This design ensures a seamless integration into existing exhaust systems, minimizing downtime during maintenance. The muffler's internal partitions and mechanically joined tubes accommodate expansion and contraction due to temperature fluctuations, reducing distortion and enhancing structural stability. Spun-locked heads and OE-style spot welds further contribute to its robust construction, ensuring reliable performance over time. For optimal acoustic control, 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 muffler's design, ensuring consistent and dependable performance. With an overall length of 20 inches, a body height of 5.5 inches, and a body width of 11 inches, the muffler is designed to fit specific vehicle applications, including the 2004-2006 Chrysler Pacifica rear exhaust system. The inlet and outlet both have a diameter of 2.5 inches, with an offset inlet configuration and an outlet tip design. The aluminized finish provides additional protection against environmental factors, enhancing the muffler's durability. The Walker Exhaust 21498 Quiet-Flow SS Exhaust Muffler is backed by a limited lifetime warranty and the exclusive 90-Day Safe and Sound Guarantee, reflecting Walker's commitment to quality and customer satisfaction.