The BD Diesel 1064744 TowMaster Transmission is built to outlast and outperform the stock Allison 1000 transmission found in 2007–2010 LMM Duramax 4WD trucks. With enhanced clutch capacity, revised oil circuits, and upgraded lock-up pressure, this dyno-tested transmission offers increased durability for towing, hauling, and everyday use. The included deep sump pan improves cooling and extends transmission life under heavy load.

💰 Refundable Core Deposit: $1,800 USD
❗ Converter not included — must be used with BD converter to retain warranty.

✅ Key Features:

Transmission Highlights:

• Revised oil circuits for improved fluid control

• High energy frictions increase durability under high torque

• Upgraded A & B trim valves deliver full line pressure

• Lock-up valve upgrade boosts torque converter lock-up pressure

• BD Deep Sump Pan increases capacity by 3.5 quarts for better thermal regulation

• Increased clutch counts for maximum holding power:

  • C1: 8 (+14%)

  • C2: 7 (+17%)

  • C3: 7 (+75%)

  • C4: 7 (+17%)

  • C5: 7 (+17%)

• Dyno-tested and ready for installation

• Converter sold separately (see Part: 1064744BM or 1064744SS for full package)

(BD Diesel Transmissions only have warranty when running a BD Trans & Converter)

🚙 Vehicle Compatibility:

• 2007–2010 Chevrolet Silverado 2500HD / 3500HD 6.6L LMM Duramax (4WD)

• 2007–2010 GMC Sierra 2500HD / 3500HD 6.6L LMM Duramax (4WD)

• Fits Allison 1000 Automatic Transmissions

📦 What’s Included:

• BD TowMaster Allison 1000 Transmission

• BD Heavy-Duty Deep Sump Transmission Pan

🛠️ Why BD Diesel?

BD Diesel transmissions are purpose-built to overcome the weak points of factory designs. From upgraded internals to increased clutch counts and improved fluid control, every BD transmission is dyno-tested for performance and reliability. Whether you tow, haul, or commute, BD transmissions are engineered to handle the load.