Keep your 2001-2007 GM 6.6L Duramax as quiet as it came from the factory with the AP Exhaust 2548 Challenge Series Replacement Muffler. This muffler features a patented Single Cartridge Muffler design along with a 100% aluminized steel construction for minimal back-pressure and maximum sound control. AP Exhaust backs their Challenge Series mufflers with a limited lifetime warranty.
Note: The OE exhaust system was a welded assembly. If your truck is still equipped with the factory exhaust, you may have to replace other components. Please confirm before ordering.
Part number: 2548