Each carriage contains a separate diesel powertrain driving both axles on one bogie via cardan shafts. Each powertrain consists of a Cummins QSK19 engine driving a Voith T 312 bre three-speed hydrodynamic transmission which drives two axles in one bogie via a Voith SK-485 final drive. The engine and torque converter were frame mounted underfloor and suspended from the car body by flexible mounts. A third underfloor module contains cooling systems and an electrical generator. The hydraulic converter includes an integrated retarder (brake). Cooling fans and the electrical generator are powered via a hydrostatic drive. The electrical generator provides a 400 V 50 Hz three phase electrical supply for the train, which is transformed or rectified to a 230 V 50 Hz single phase supply, a 110 V DC auxiliary supply, and a 24 V DC battery supply. Connections bridge the main 400 V AC and 110 V DC supplies across the cars of each train set. Component suppliers included Dellner (couplings), ZF (dampers), SKF (bearings), Westinghouse Brakes (braking systems).