2001-2004 Silverado & Sierra 2500 & 3500 Duramax LB7 Valve Bodies

Your Duramax LB7 may be able to make good power, but your stock transmission valve body likely has high mileage and may not be delivering enough fluid to critical parts of your truck's transmission. Tier One's performance valve bodies for 2001-2004 Silverado & Sierra 2500 & 3500 Duramax LB7 trucks feature both performance and reliability upgrades that will keep your Allison shifting properly. Each of these Duramax LB7 valve bodies uses a combination of performance springs, valves, and check balls to give your transmission higher line pressures and improved lubrication. We also include brand new OEM solenoids and switch manifolds to ensure excellent reliability, even under extreme power levels. If your transmission clutches are already burnt out from low pressure or valve body failure, a new valve body won't bring them back, and you may be better suited getting a fresh start with one of our 2001-2004 Duramax LB7 Complete Transmissions. A high-pressure valve body provides the holding power you need, but you need a converter that can handle that lock-up force, so pair your valve body with one of our 2001-2004 Duramax LB7 Torque Converters. Electronics hate heat, so protect your new valve body and solenoids by keeping fluid temperatures down with our 2001-2004 Duramax LB7 Transmission Coolers. When installing a new valve body, it's the perfect time to upgrade your fluid capacity or replace internal filters, so you can find deep pans and other essential components in our 2001-2004 Duramax LB7 Transmission Parts.