Upgrade the differentials in your 2017-2019 Chevy/GMC 6.6L L5P Duramax with Differential Carriers & Lockers. Find model-specific components offered for your 1/2-ton, 3/4-ton, or 1-ton truck. Rebuild your axles with empty carrier cases, or gain traction with lockers, spools, limited slip differentials, and more. Industry leading brands like Yukon Gear & Axle, USA Standard Gear, and Nitro Gear & Axle are available.