Walker Exhaust SoundFX Universal 18138 Exhaust Muffler Fits select: 1999-2007 CHEVROLET SILVERADO, 1999-2007 GMC NEW SIERRA

FACTORY SOUND -- Louvered tubes help reduce radiated noise for factory-style sound quality compared to straight perforated tubes FLEXIBLE SOLUTION -- Customizable design features expandable bushings for easy fitment and may require specialized fabrication and/or welding for installation GET MORE MILES FROM YOUR MUFFLER -- Designed and tested to extend muffler life RESISTS CORROSION -- Aluminized steel construction and internal drainage system helps reduce corrosion Additional Features Finish:Aluminized Muffler Type:Combination