BD Diesel Transmission & Converter Package w/ Pressure Controller - 2011-2016 Chevy LML Allison 4wd

If you're looking to handle more power and torque in your 2011-2016 Chevrolet Silverado 2500 HD or 3500 HD, or your GMC Sierra equivalent, this BD Diesel Transmission & Converter Package is a serious upgrade. This isn't just a rebuilt transmission; it's a complete, matched system designed to stand up to the demands of your LML Duramax diesel, whether you're towing heavy loads or hitting the street. BD Diesel has put together a package that addresses common weak points in the stock Allison transmission, giving you a more reliable and capable drivetrain.

What sets this package apart is the attention to detail and the matched components. You get a transmission featuring a new double cage stator sprag, which is stronger than the OE design and helps prevent common failures. The pistons are riveted for better alignment and to avoid issues from welding, and the trapezoid teeth on the gears increase contact area, reducing wear and chatter. A billet input shaft is included to handle the stress from rapid throttle changes and higher horsepower. BD also includes their Allison Pressure Box, which can deliver up to 275 PSI of line pressure, and a BD Aluminum HD deep transmission pan that adds an extra 3.5 quarts of fluid capacity, helping to keep temperatures down. The torque converter itself has a triple disc setup with a taller cover for easier rebuilding, and its cast stator design maximizes torque transfer. Every transmission is dyno tested to ensure it performs as expected right out of the box.

This package includes a significant increase in clutch count across all clutch packs, with high-energy GPZ frictions and increased steel mass for better heat dissipation. Thrust bearings replace plastic washers for enhanced durability. The overall weight is also reduced by 12lbs compared to some competitors. This BD Diesel package is a well-built solution for anyone pushing their LML Duramax beyond stock capabilities, offering improved performance and long-term reliability for towing, street use, or track applications.