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

If you've upgraded the driveline components on your 2017-2019 GM 6.6L Duramax L5P, adding a new differential cover is a smart way to improve both protection and functionality. At Alligator Performance, we offer a wide selection of aftermarket differential covers designed to help dissipate heat faster, increase fluid capacity, and protect your gears from contaminants like dirt and water. Built to the highest quality standards, these differential covers provide more protection for your driveline components while adding a rugged, aggressive look to your truck's underside. 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.