The Walker 39453 Quiet-Flowâ„¢ Stainless Steel Exhaust Muffler Assembly is engineered to provide a direct-fit replacement for original equipment (OE) mufflers, ensuring seamless integration into existing exhaust systems. Constructed with 100% stainless steel, this muffler offers superior corrosion resistance, extending its service life significantly compared to traditional aluminized mufflers. The internal design features a three-tube configuration that effectively reduces noise levels, delivering a premium, factory-like sound quality. Additionally, the muffler incorporates OE-style louvered tubes and domed heads, which further enhance acoustic performance by minimizing radiated noise. The robust construction includes spun-locked heads and OE-style spot welds, contributing to the overall structural integrity and durability of the assembly. Designed with an internal drainage system, the muffler effectively prevents moisture accumulation, reducing the risk of internal corrosion and ensuring consistent performance over time. This assembly is backed by Walker's limited lifetime warranty and a 90-day Safe and Sound Guarantee, underscoring its reliability and quality. - PREMIUM ACOUSTIC CONTROL -- Exclusive Continuous Roving Fiberglass (CRF) technology absorbs unwanted interior resonance while maintaining a deep performance tone
- COMPLETE SOLUTION -- Includes DynoMax Ultra Flo welded muffler, pipes and clamps
- COMPATIBILITY -- Designed for 2007-2008 Chevrolet Silverado and GMC Sierra 1500
- 134.5-in. wheelbase
- see product information for compatibility and engine specs
- IMPROVED FLOW CAPACITY -- 3-in. Stainless-steel tubing with mandrel bends improves flow capacity over traditional bends while increased pipe diameter from OE sizes increases flow and power
- SUPERIOR PERFORMANCE -- Straight-through design ensures unrestricted exhaust flow and reduces back pressure
- dyno proven to flow up to 1,800 SCFM
- BUY WITH CONFIDENCE -- Comes with DynoMax’s limited lifetime warranty and exclusive 90-Day Performance and Sound Guarantee™
- ENGINEERED TO LAST -- Muffler features stainless-steel construction with a micro-finish for lifelong protection and 100% welded design for maximum durability
- NOTES -- Welded 4-in. outlet double wall, buffed and polished stainless-steel slant cut tip
- EASY TO INSTALL -- Direct-fit bolt-on pre-assembled solution with welded hangers, pipes and clamps for easy installation that doesn’t require specialized fabrication and/or welding























