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 Instructions
Installation Instructions


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