2020-2024 GM Duramax 6.6L L5P Tonneau Accessories

Adding on a premium tonneau cover to your 2020-2024 GM Sierra or Silverado means your truck can handle it all, but even the toughest bed covers on the market could use some accessories to make them perform at their very best. Here at Alligator performance, we carry a selection of tonneau cover accessories and bed accessories so you can get the most out of each adventure. Whether you need improved organization for the job-site or an increase in storage capacity for those long hauls, you'll be sure to love what you find for your GM 6.6L Duramax L5P build. GM Duramax Fitments: 2020, 2021, 2022, 2023, 2024 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.