BD Diesel · New
BD Diesel 04-06 Chevy Silverado / GMC Sierra 6.6L 4WD Roadmaster Transmission & Converter Package
MPN 1064774SS · Store SKU bdd1064774SS
Supplier stock checked 11/7/2026, 10:14:21 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
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Product details
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. ROADMASTER TRANS PKG ALLISON SIERRA/SILVERADO 2500HD/3500HD 6.6L DURAMAX 04.5-06 Roadmaster Transmission Kit; Allison; Incl. Converter Package; Roadmaster Transmission Kit
Manufacturer fitment & guides
Check 1064774SS against the manufacturer’s application information below.
Part-specific notes
- Freight shipping required.
- California Proposition 65: Y