Upgrade the front or rear differential in your 1989-1993 Dodge 5.9L Diesel with new Differential Covers. Differential covers come in a wide variety of styles such as a stock stamped steel replacement, or an updgraded cast and machined design. Cast covers can offer added benefits such as increased fluid capacity, integrated cooling fins, and additional strength over the steel factory cover. Find 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!