This BD Diesel transmission and torque converter package is engineered for heavy-duty fleet and diesel truck applications, offering unmatched reliability and performance. The package includes a dyno-tested transmission assembly, a high-capacity aluminum deep transmission pan, and a triple-stage torque converter with enhanced stall capabilities, designed specifically for 2011-2016 Chevrolet Silverado 2500 HD models with the LML Allison 1000 transmission. Every component is built to withstand the rigorous demands of towing, street driving, or track use, ensuring your vehicle maintains optimal power transfer under severe conditions. The heavy-duty transmission features a forged one-piece cover, increased clutch counts, and a machined torque converter position for durability and consistent engagement, making it a trusted upgrade for high-performance diesel trucks. The transmission pan increases oil capacity by 3.5 quarts, improving thermal management and reducing wear during demanding workloads. Additionally, the package utilizes a new double cage stator sprag to prevent common failure points, while the redesigned cast stator maximizes torque output and reduces heat buildup. Enhanced steel mass and furnace-brazed turbine fins promote better heat dissipation and fluid coupling efficiency, which are crucial for long-term durability in towing or high-horsepower scenarios. The included BD Allison Pressure Box delivers up to 275 PSI of line pressure, providing precise control and improved shifting characteristics. Designed for professional installation, this assembly requires LTL freight shipping and is ideal for fleet operators and serious diesel enthusiasts seeking reliable, high-performance transmission upgrades. Proper installation and adherence to manufacturer break-in procedures are essential for achieving maximum lifespan and performance from this heavy-duty assembly. Regular maintenance, including replacing the pilot bearing, throwout bearing, and resurfacing the flywheel, will ensure consistent operation and longevity of your drivetrain investment.
Features:
- Heavy-duty diesel torque capacity with high-energy friction materials for smooth engagement and durability
- Enhanced thermal capacity to prevent clutch slippage and maintain performance under severe towing conditions
- Increased clutch counts and steel mass for improved heat dissipation and long-term drivetrain reliability
- Dyno-tested transmission assembly with precision components designed for heavy-duty fleet and performance applications
Fitment:
Chevrolet Silverado 2500 HD High Country 2015 to 2016
Chevrolet Silverado 2500 HD LT 2011 to 2016
Chevrolet Silverado 2500 HD LTZ 2011 to 2016
Chevrolet Silverado 2500 HD WT 2011 to 2016
Chevrolet Silverado 3500 HD High Country 2015 to 2016
Chevrolet Silverado 3500 HD LT 2011 to 2016
Chevrolet Silverado 3500 HD LTZ 2011 to 2016
Chevrolet Silverado 3500 HD WT 2011 to 2016
GMC Sierra 2500 HD Base 2015 to 2016
GMC Sierra 2500 HD Denali 2011 to 2016
GMC Sierra 2500 HD SLE 2011 to 2016
GMC Sierra 2500 HD SLT 2011 to 2016
GMC Sierra 2500 HD WT 2011 to 2014
GMC Sierra 3500 HD Base 2015 to 2016
GMC Sierra 3500 HD Denali 2011 to 2016
GMC Sierra 3500 HD SLE 2011 to 2016
GMC Sierra 3500 HD SLT 2011 to 2016
GMC Sierra 3500 HD WT 2011 to 2014





















