The Walker Exhaust 21151 is a high-quality exhaust muffler designed to enhance the performance and longevity of your vehicle's exhaust system. Constructed with a durable steel body and aluminized finish, this muffler offers superior resistance to corrosion, ensuring a longer service life compared to standard aluminized mufflers. Its internal drainage system effectively reduces moisture collection, further preventing rust and deterioration over time. The muffler features an offset inlet and outlet configuration, with a 2.5-inch inlet and a 2.25-inch outlet, facilitating a seamless fit for various vehicle applications. The round shape and compact dimensions—6.5 inches in height and width, and 23 inches in length—allow for easy integration into existing exhaust systems without significant modifications. Designed with OE-style louvered tubes and domed heads, the 21151 muffler delivers a premium, factory-style sound quality, effectively lowering noise levels and reducing radiated noise. This design ensures a comfortable driving experience while maintaining compliance with noise regulations. The internal partitions and mechanically joined tubes accommodate expansion and contraction during temperature changes, minimizing distortion and enhancing the muffler's structural integrity. Spun-locked heads and OE-style spot welds provide additional stability and durability, contributing to the muffler's overall longevity. Acoustic and flow testing validate the muffler's performance, ensuring it meets or exceeds factory standards. The Walker Exhaust 21151 muffler is an ideal choice for fleet operators seeking a reliable, durable, and efficient solution to maintain optimal vehicle performance and compliance with noise regulations.