BD Diesel 1064724SS TowMaster Allison 1000 Transmission & Converter – 2004.5–2006 Chevy/GMC LLY 6.6L Duramax (5-Speed 4WD)

The BD Diesel 1064724SS TowMaster Package delivers unmatched durability for 2004.5–2006 LLY Duramax trucks with the 5-speed Allison 1000 transmission. This complete package includes a dyno-tested BD transmission and enhanced torque converter—both engineered to handle higher torque, reduce slippage, and increase efficiency. Built for street and towing applications, this is the upgrade your diesel truck demands.

💰 $2,100 Refundable Core Deposit Required
⏱️ Estimated Install Time: 9 Hours

✅ Key Features

Transmission Highlights:

• BD Aluminum HD Deep Transmission Pan (+3.5 quarts capacity)

• Revised oil circuits and updated A & B trim valves for full clutch pressure

• New converter lock-up valve boosts lock-up strength

• High-energy frictions enhance thermal and torque resistance

• Increased clutch counts for better load capacity:

  • C1: 8 clutches (+14%)

  • C2: 7 clutches (+17%)

  • C3: 7 clutches (+75%)

  • C4: 7 clutches (+17%)

  • C5: 7 clutches (+17%)

• Every unit is dyno-tested for reliability and smooth shifts

Torque Converter Highlights:

• Enhanced Stall – ideal for towing and street driving

• Cast aluminum stator for torque multiplication

• Lower rpm engagement improves efficiency and cooling

• Furnace-brazed fins and up to triple the stock lock-up clutch material

• Stamp-forged steel front cover ensures long-term durability

🚙 Vehicle Compatibility

• 2004.5–2006 Chevrolet Silverado 2500HD/3500HD 6.6L LLY Duramax (5-Speed 4WD)

• 2004.5–2006 GMC Sierra 2500HD/3500HD 6.6L LLY Duramax (5-Speed 4WD)

🔧 Fits trucks equipped with the Allison 1000 5-speed transmission.

🛠️ Why BD Diesel?

BD Diesel Performance stands as a benchmark in transmission durability. With dyno-verified testing, enhanced internal upgrades, and unmatched engineering, BD’s transmission packages are trusted by diesel owners worldwide. Street, tow, or trail—BD has your back.