BD Diesel USA is a performance-oriented company specializing in high-quality diesel and heavy-duty truck components and upgrades. Their products are engineered to handle high pressure, high temperature, high load, and extended operation, not just occasional use. With years in the field (including intensive hours of idling, towing, and heavy usage), the BD Diesel's engineering and R&D is informed by real use cases.
Installation recommendation: Experienced technician; Includes our exclusive Smart Trim/Clutch Control valve assemblies and items to modify the C2 clutch piston for increased capacity and more durability.
The C2 clutch is the weakest part of the early 5 Speed Allison; Addresses goes to neutral under load; 3-4 slip; burned C2/C3 clutches; sticks in one gear; won't move after extended parking; loss of pump prime; smart clutch control valves for increased durability; SHORT-CRISP-SMOOTH-upshifts andamp; kickdowns; Handles 500 Street Horsepower
Warranty:
Parts
- 90-Days
Emissions:
This product does not require an EO in California. By nature of its design, it is legal for sale and use in all 50 states. Replacement Parts included. (EMS:4)
Features:
- Installation recommendation: Experienced technician
- Includes our exclusive Smart Trim/Clutch Control valve assemblies and items to modify the C2 clutch piston for increased capacity and more durability. The C2 clutch is the weakest part of the early 5 Speed Allison
- Addresses goes to neutral under load; 3-4 slip; burned C2/C3 clutches; sticks in one gear; won't move after extended parking; loss of pump prime; smart clutch control valves for increased durability; SHORT-CRISP-SMOOTH-upshifts and kickdowns
- Handles 500 Street Horsepower
Installation Notes:
Professional installation is required.
Specifications:
EMS Code: 4.
Transmission Model: Allison.
Warranty: 90-Days.
Fitment & Application:
- 2008 GMC Sierra 3500 HD SLE/SLT/WT
- 2008 GMC Sierra 2500 HD SLE/SLT/WT
- 2008 Chevrolet Silverado 3500 HD LT/LTZ/WT
- 2008 Chevrolet Silverado 2500 HD LTZ
- 2008 Chevrolet Silverado 2500 HD LT/WT
- 2007 GMC Sierra 3500 HD SLE/SLT/WT
- 2007 GMC Sierra 2500 HD SLE/SLT/WT
- 2007 Chevrolet Silverado 3500 HD LT/LTZ/WT
- 2007 Chevrolet Silverado 2500 HD LTZ
- 2007 Chevrolet Silverado 2500 HD LT/WT
- 2006 GMC Sierra 2500 HD SLE/SLT/WT
- 2006 GMC Sierra 2500 HD SL
- 2006 Chevrolet Silverado 2500 HD LT/WT
- 2006 Chevrolet Silverado 2500 HD LS
| Brand | BD Diesel |
|---|---|
| Part Number | BDD-1604721 |
| Shipping Method | UPS/FedEx/USPS Ground |
| California Prop 65 Warning |
|

This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or reproductive harm. For more information, visit https://www.p65warnings.ca.gov/