2001-2004 GM Duramax 6.6L LB7 Gear Install Kits

While swapping out the front/rear ring-and-pinion gears in your 2001-2004 GM 6.6L Duramax LB7 can make for a huge improvement in your truck's performance, you may as well upgrade the rest of your critical driveline components while you have your truck torn apart. These Sierra/Silverado install kits include new bearings, races, shims, and all other necessary hardware to completely overhaul your differentials while completing a ring-and-pinion gear install. GM Duramax Fitments: 2001, 2002, 2003, 2004 GM 6.6L Duramax. Submodel Fitments: WT, Custom, LT, LTZ, High Country, 1LT, 2LT, Pro, SLE, SLT, AT4, Denali. Some exceptions apply, please see individual product pages for specific fitments.