Upgrade the front or rear differential in your 1998.5-2002 Dodge 5.9L Diesel with new Differential Covers. Differential Covers are typically available as an upgraded cast and machined design and as a stamped steel replacement. Besides the increased strength of a cast cover, they can also offer increased fluid capacity and integrated cooling fins. Check out all the leading brands including Mag-Hytec, Dynatrac, ATS Diesel, BD-Power, PPE, AFE Power, Yukon, Banks Power, B&M, Nitro Gear & Axle, Dorman, and more!