2006-2007 Duramax LBZ 2500 & 3500 Parts & Accessories

The 2006-2007 Silverado and Sierra HDs with the LBZ Duramax are legendary for their pre-emissions reliability and massive power potential. However, even the mighty LBZ is limited by its stock Allison 1000 transmission, which can easily go into limp mode once you start adding tuners or towing heavy loads. Tier One is your source for bulletproofing your drivetrain to keep up with the LBZ's output. We carry a complete lineup of transmission upgrades, from our race-proven built Allison 1000 transmissions and rebuild kits to high-performance torque converters, thermal bypass valves, and deep transmission pans. Whether you use your truck for daily driving, heavy hauling, or drag racing, Tier One has the parts to keep your Allison shifting firmly and reliably. Check out our built Allison transmissions. If you don't see what you're looking for, contact Tier One or call 602-399-5484! If your factory transmission is slipping or you are pushing serious horsepower, a stock replacement just won't cut it, so take a look at our 2006-2007 Duramax LBZ Complete Transmissions. The factory torque converter is often the first weak point to fail when you start adding torque, so get better lock-up performance with one of our 2006-2007 Duramax LBZ Torque Converters. The Allison 1000 runs hot due to the factory thermal valve, so keep your fluid temps in check with our 2006-2007 Duramax LBZ Transmission Coolers. Sloppy shifts or pressure issues can be fixed with our updated 2006-2007 Duramax LBZ Valve Bodies. Finally, whether you need a deep transmission pan for extra fluid capacity or rebuild components, we have the parts you need in our section of 2006-2007 Duramax LBZ Transmission Parts.