2017-2019 GM 2500HD/3500HD 6.6L L5P Duramax Mufflers

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Whether your diesel truck's factory muffler has seen better days, or you want to fine-tune it's sound, we here at Alligator Performance have a bunch of aftermarket, universal mufflers that can get the job done. We have a wide selection of different mufflers with a variety of internal designs, lengths, diameters, materials, exit styles, and finishes so that you can find the perfect muffler for your build. We have everything from ultra-quiet chambered mufflers, aggressive straight-throughs, and awesomely-loud race mufflers, giving you a ton of options for your Duramax, Cummins, or Powerstroke's exhaust note.

  GM Duramax Fitments: 2017, 2018, 2019 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.

GM Duramax>2017-2019 6.6L L5P

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