BD Diesel Transmission - 04.5-06 Chevy LLY Allison 1000 5-Speed 4WD Transmission & Converter Pack

If you're looking to significantly increase the durability and towing capability of your 2004.5-2006 LLY Duramax Silverado or Sierra, this BD Diesel transmission and torque converter package is a solid choice. This isn't just a stock replacement; it's a complete overhaul designed to handle the demands of a powerful diesel engine, especially when you're towing heavy loads or pushing your truck hard. The Allison 1000 transmission is known for its strength, but this package takes it to another level with updated internals and a matched converter.

BD Diesel has revised the oil circuits and added updated A & B trim valves to ensure full line pressure reaches the clutches, which is crucial for smooth and strong engagement. You'll find an increased number of clutches in several key areas, including C1, C2, C3, and C5, with higher energy GPZ frictions used throughout. This means more surface area to handle torque and less heat buildup. The included deep aluminum transmission pan adds an extra 3.5 quarts of fluid capacity, further helping to keep temperatures down during extended use. The torque converter is also enhanced for street and towing applications, featuring a torque-multiplying stator and more lock-up clutch material for improved efficiency and reduced heat.

This package has been dyno-tested as a complete unit, so you know the transmission and converter work together seamlessly. It comes with BD's 36-month or 150,000-mile parts warranty, and 12-month or 24,000-mile labor warranty, giving you confidence in your investment. Remember to consult the manufacturer's installation instructions for any specific requirements or recommendations when installing this heavy-duty transmission system.