BD Diesel 04-06 Chevy Silverado / GMC Sierra 6.6L 4WD Roadmaster Transmission & Converter Package
Why this price?
$6,676.95 is MSRP, the lowest price BD Diesel lets us list it at. Additionally, Pro members get $333.85 back on this part.
$6,676.95 − $333.85 = $6,343.10
Special Order
This part is still available to order. Once you place your order, we’ll submit it directly to BD Diesel, and they’ll ship it straight to you.
Delivery times can vary depending on the brand, so we can’t guarantee an exact arrival date. What we can guarantee is that we’ll stay on top of your order, monitor its progress, and keep you updated until it reaches your door.
Special-order items are typically not kept in stock by most retailers. By ordering through us, your order is placed directly with BD Diesel, assuring you get the part as quickly as possible.
Want to get an estimated delivery timeframe before ordering? Contact us through our contact page, and we’ll be happy to find out for you.
Not sure it fits? Read our tips.
Fitment tips
Fitment can come down to more than year, make and model. Sometimes the sub-model decides, so start with the fitment table below.
- Drive type. If your car is all-wheel drive, make sure the part is for all-wheel drive, not rear-wheel drive.
- Engine size. For engine parts, make sure the engine size on the product matches your engine.
- Transmission. Manual and automatic cars often take different parts.
- Body style. Sedan or hatch, two-door or four-door, cab and bed length on trucks.
Manufacturer data can sometimes have imperfections. Still not sure? We are happy to help.
Send us a message and we will confirm the fit.
Couldn't load pickup availability
The BD RoadMaster Allison transmission is built for reliability and peace of mind. Designed for stock or mildly modified Duramax GM Trucks, the RoadMaster increases durability with a modified valve body. These modifications increase the torque capacity of the clutch packs, including doubling the capacity of the failure-prone C2 clutch! The transmission also receives a BD Diesel Deep aluminum pan, for an additional 3.5 quarts of fluid, helping to keep transmission temperatures cool while towing. Every RoadMaster Allison transmission package includes a billet ProForce torque converter and is dyno tested before shipping.
Installation InstructionsInstallation Instructions
- Increased clutch torque holding capacity (double capacity for C2 and C4 clutches), for less slip while towing
- Increased Clutch Torque Holding Capacity [Double Capacity For C2 And C4 Clutches] For Less Slip While Towing
- Deep aluminum pan for additional 3.5 quarts of fluid capacity to help keep temperatures lower
- Billet ProForce torque converter for reliable converter clutch apply
- Stock clutch counts in transmission
This Part Fits:
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2004-2005 | Chevrolet | Silverado 2500 HD | Base |
| 2004-2006 | Chevrolet | Silverado 2500 HD | LS |
| 2004-2006 | Chevrolet | Silverado 2500 HD | LT |
| 2004-2006 | Chevrolet | Silverado 2500 HD | WT |
| 2004-2005 | Chevrolet | Silverado 3500 | Base |
| 2004-2006 | Chevrolet | Silverado 3500 | LS |
| 2004-2006 | Chevrolet | Silverado 3500 | LT |
| 2004,2006 | Chevrolet | Silverado 3500 | WT |
| 2004-2005 | GMC | Sierra 2500 HD | Base |
| 2006 | GMC | Sierra 2500 HD | SL |
| 2004-2006 | GMC | Sierra 2500 HD | SLE |
| 2004-2006 | GMC | Sierra 2500 HD | SLT |
| 2004-2006 | GMC | Sierra 2500 HD | WT |
| 2004-2005 | GMC | Sierra 3500 | Base |
| 2006 | GMC | Sierra 3500 | SL |
| 2004-2006 | GMC | Sierra 3500 | SLE |
| 2004-2006 | GMC | Sierra 3500 | SLT |
| 2004-2006 | GMC | Sierra 3500 | WT |
Ships by Freight Truck
This item is too large or too heavy to ship as a normal package, so it travels on a freight truck instead of with UPS or FedEx.
The carrier will call you before delivery to arrange a time window, so please make sure the phone number on your order is one you answer. Someone needs to be there to receive it and sign for it.
Freight deliveries are curbside. The driver brings it to the end of your driveway, not into a garage or up a flight of stairs, so it is worth having a second person on hand for anything heavy.
Please allow extra time compared with a normal package. If you need an estimated delivery window before ordering, contact us through our contact page and we will find out for you.
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