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Upgrade your LLY-powered 2WD truck with the BD Diesel 1064724 TowMaster Transmission—a reinforced, dyno-tested Allison 1000 replacement built to outlast stock. Designed for towing and daily driving, this transmission includes internal upgrades to increase clutch capacity, friction durability, and fluid cooling. Whether you're replacing a failing factory unit or prepping for performance, this is your heavy-duty solution.
💰 $1,800 Refundable Core Deposit Required
⏱️ Estimated Install Time: 9 Hours
TowMaster Transmission Highlights:
BD Aluminum HD Deep Transmission Pan (adds 3.5 quarts of fluid capacity)
High-energy frictions and revised oil circuits for longer service life
New A & B trim valves ensure full clutch pressure delivery
Optimized clutch packs for improved holding power:
C1: 8 clutches (+14% vs. stock)
C2: 7 clutches (+17%)
C3: 7 clutches (+75%)
C4: 7 clutches (+17%)
C5: 7 clutches (+17%)
Each transmission is fully dyno-tested before shipping
(BD Diesel Transmissions only have warranty when running a BD Trans & Converter)
2004.5–2006 Chevrolet Silverado 2500HD/3500HD 6.6L LLY Duramax (5-Speed 2WD)
2004.5–2006 GMC Sierra 2500HD/3500HD 6.6L LLY Duramax (5-Speed 2WD)
⚙️ Designed for the Allison 1000 5-speed automatic found in 2WD models.
BD TowMaster Allison 1000 Transmission (Complete Assembly)
BD Deep Sump Heavy-Duty Transmission Pan
Internal upgraded frictions, steels, trim valves, and oil circuits
Pre-filled clutch pack configuration with increased capacity
BD Diesel builds proven drivetrain components engineered for the demands of heavy-duty towing, hauling, and off-road use. With decades of diesel expertise and dyno-verified performance, BD TowMaster transmissions are a dependable upgrade over worn factory units.
