2001-2004 GM 2500HD/3500HD 6.6L LB7 Duramax Differential Covers

The factory thin sheet metal differential cover on your 2001-2004 GM 2500HD/3500HD can easily be damaged off-road. Our selection of aftermarket differential covers not only adds durability but also enhances the cooling capability on your differential. Many of these covers offer increased fluid capacity and built-in cooling fins to help regulate temperatures during heavy towing or aggressive driving. Additionally, most of these covers come with built-in drain and fill plugs, making gear oil changes much more convenient. Pair your heavy-duty differential covers with our selection of Bumpers & Skid Plates to further protect your investment! GM Duramax Fitments: 2001, 2002, 2003, 2004 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.