Shop Differential Covers and upgrade the axle in your 2004.5-2007 Dodge 5.9L Cummins. Aftermarket cast covers typically offer increased fluid capacity, integrated cooling fins, and additional strength over the OE stamped steel cover. Differential covers come in a wide variety of styles such as a stock stamped steel replacement, or an updgraded cast and machined design. Shop all the top manufacturers including Mag-Hytec, Dynatrac, ATS Diesel, BD-Power, PPE, AFE Power, Yukon, Banks Power, B&M, Nitro Gear & Axle, Dorman, and more!