2011-2016 GM 2500HD/3500HD 6.6L LML Duramax Differential Covers

The factory sheet metal differential cover on your 2011-2016 GM 2500HD/3500HD is prone to damage. We offer an excellent selection of aftermarket differential covers that can make your maintenance easier, add a great look, and improve your differential's cooling and durability all in one. Many of these GM differential covers feature higher capacities than stock, as well as built-in cooling fins that help keep temperatures down during aggressive driving or heavy towing. Best of all, most of these differential covers feature built-in drain and fill plugs that make changing your GM's gear oil much easier. Pair your heavy-duty differential covers with our selection of Skid Plates for additional protection! GM Duramax Fitments: 2011, 2012, 2013, 2014, 2015, 2016 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.