Remanufactured from Weller, the Detroit DT12DB1CS transmission combines direct-drive performance with cooler-ready capability and single clutch efficiency for demanding heavy duty trucking applications. Built to OEM Detroit standards, this model offers 12 forward speeds, automated shifting technology, and a design focused on long-term reliability. With provisions for improved cooling, smoother gear transitions, and reduced maintenance needs, the DT12DB1CS helps fleets minimize downtime, improve fuel economy, and maintain dependable performance mile after mile.