Shop Gear Install Kits & Components before installing new gears in your 2017-2019 Chevy/GMC 6.6L L5P Duramax. Search the large assortment of bearings, shims, seals, crush sleeves, gaskets, and all the other parts when replacing the gears in your differential. Master overhaul kits and master installation kits provide all the parts you need to get the job done. Check out all the leading brands offered including Nitro Gear & Axle, Eaton, USA Standard Gear, Yukon Gear & Axle, Dorman, Cometic Gasket, Mahle, and more!