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If your stock Allison is on its last legs or struggling to hold up to towing demands, the BD Diesel TowMaster 1064704 is the upgrade your 2001–2004 LB7 Duramax needs. This transmission-only package delivers enhanced clutch capacity, revised oiling, and a heavy-duty deep sump pan to keep temps under control. Whether you're stock or lightly modified, this transmission is engineered to give your drivetrain the longevity it deserves.
💰 $1,800 Refundable Core Deposit Required
⏱️ Estimated Install Time: 9 Hours
⚠️ Note: BD torque converter must be installed at time of installation. Using a third-party or OE converter will void the warranty.
TowMaster Transmission Highlights:
BD Aluminum Deep Sump Pan (+3.5 quarts fluid capacity)
High-energy frictions for improved torque handling
Revised oil circuits for better lubrication and cooling
Upgraded lock-up valve boosts converter clutch pressure
A & B trim valves ensure full line pressure to clutch packs
Increased clutch count over OEM for greater durability
C1: 8 clutches (+14%)
C2: 7 clutches (+17%)
C3: 7 clutches (+75%)
C4: 7 clutches (+17%)
C5: 7 clutches (+17%)
Dyno-tested and validated for performance
(BD Diesel Transmissions only have warranty when running a BD Trans & Converter)
2001–2004 Chevrolet Silverado 2500HD/3500 6.6L LB7 Duramax (4WD)
2001–2004 GMC Sierra 2500HD/3500 6.6L LB7 Duramax (4WD)
Designed for use with the Allison 1000 5-speed automatic transmission.
BD TowMaster Allison 1000 Transmission Assembly (no converter)
BD Deep Sump Transmission Pan (pre-installed)
Internal upgrades: clutch packs, lock-up valve, trim valves
Dyno-tested and validated unit
Required warranty conditions documentation
This product does not require an EO number for California. It is legal for sale and use in all 50 states. Replacement parts included. (EMS:4)
We are open Monday-Friday from 8am-6pm EST
Yes, customers located in and around the the Piedmont area are welcome to pick up their items from our retail location during normal business hours. Our address is:
Elite Race Fab
1514 Holbrook St Suite D-F
Greensboro, NC 27403
Elite Race Fab offers free ground shipping & handling to our retail customers within the lower 48 contiguous United States on most orders totaling $159.99 and higher, when the item being purchased is not a Freight/LTL item! Orders under $159.99 will be subject to a nominal $13.99 Flat shipping charge. Some exceptions and/or exclusions apply, in those scenarios you will be advised of any additional charges in the item details/description stating shipping exclussions/freight shipping required etc.
In regards to expedited and international shipping each order will need to be quoted on a case by case basis. You can obtain a quote two ways:
- From your shopping cart select "Request a Quote" prior to placing your order. We will review your proposed order and promptly respond with shipping estimates.
- Complete your order ahead of time indicating either expedited or international shipping during the checkout process. We will promptly determine shipping rates for your order and email you for approval and additional payment.
-Give us a call and we can ensure your item is shipped right then, to ensure you have it in time for your deadline.
We have been committed to offering all of our customers the lowest pricing throughout our website day in and day out. We value your business so much that we go a step further than our competitors. We use a third party software that proactively monitors all our competitor's websites/pricing so that we can make adjustments accordingly if needed to have the lowest prices. Thats right, no need to spend hours searching for the lowest prices, as ours will be the lowest.
As far as price matching, we dont want to write a check we cant cash, but we certainly want to earn your business. With that said, we will go above and beyond to match our competitor's pricing when it is needed. Simply email us, click the live contact button, or give us a call and be sure to have a link to our competitor's site and please factor in any shipping and handling their website will be charging. We will then ensure you get the lowest price, and either match or beat their pricing.
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