Upgrade the front or rear differential in your 2011-2016 Chevy/GMC 6.6L LML Duramax with new Differential Covers. Aftermarket cast covers typically offer increased fluid capacity, integrated cooling fins, and additional strength over the OE stamped steel cover. Choose between an OE-style stamped steel replacement cover or upgrade to a more durable cast and machined unit. 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!