2006-2007 Silverado & Sierra 2500 & 3500 Duramax LBZ Valve Bodies

Your Duramax LBZ-powered Silverado or Sierra HD truck may be capable of some serious power without a ton of effort, but the stock valve body can struggle to handle it, leading to weird shifting, low line pressures, and trouble codes. Tier One's selection of performance valve bodies for 2006-2007 Silverado & Sierra 2500 & 3500 Duramax LBZ trucks are all built from the ground up to handle more power and tough applications without suffering from cross-leaks and other failures that can put your truck's entire transmission at serious risk. Tier One's Duramax LBZ valve bodies use a combination of aftermarket upgrades and new OEM components to give your truck higher line pressures and improved lubrication to all of your transmission's critical components, as well as improved long-term reliability, no matter how hard you're pushing your truck. Make sure to also check out our 2006-2007 Duramax LBZ Transmission Pans or our 2006-2007 Duramax LBZ Transmission Coolers!