Remanufactured from Weller, the Detroit DT12OA1CS transmission delivers dependable overdrive performance with cooler-ready capability and single clutch design for heavy duty trucking applications. Built to strict OEM specifications, it features 12 forward speeds and automated shifting technology for smoother gear changes, improved fuel efficiency, and reduced driver fatigue. With Weller’s rigorous remanufacturing process, the DT12OA1CS offers long-lasting durability and helps fleets minimize downtime while maximizing productivity mile after mile.