Remanufactured from Weller, the Detroit DT12DA1CS transmission provides direct-drive efficiency with cooler-ready capability and single clutch reliability for heavy duty trucking applications. Built to OEM Detroit standards, this model delivers 12 forward speeds, automated shifting technology, and a robust design engineered for long-term durability. With provisions for improved cooling, smoother gear transitions, and reduced maintenance needs, the DT12DA1CS helps fleets minimize downtime, improve fuel efficiency, and maintain dependable performance mile after mile.