BW4446 Transfer Case

The Zumbrota Drivetrain RTC4446D-4 is a remanufactured BW4446 transfer case engineered for 2013-2018 Ram 2500 and 3500 trucks, specifically excluding those equipped with the Aisin transmission. This unit offers a 29-spline input and a 6-bolt transmission adapter pattern, with a rear slip yoke for the output. Each transfer case is rebuilt to stringent standards by Zumbrota Drivetrain, employing a thorough inspection and cleaning process. Internal and external components are checked for wear, and all units are reassembled with new bearings, seals, and viscous couplers. The remanufactured transfer cases undergo spin testing to ensure proper shiftability and quiet operation. They are shipped in protective high-density plastic totes to prevent transit damage. Key specifications include an aluminum housing, electric shift operation with 3 selector switch positions, and a fluid capacity of 1.9 quarts. Notably, the shift motor is not included with this unit. Additional technical details mention magnet wire in the rear case and an internal spline front output shaft.