The torque converter is what transfers electric power from your motor for the gearbox. It is a fluid coupling that works by using hydraulic pressure to multiply the torque from the engine. The torque converter is built up of three major pieces: the pump, the turbine, as well as stator. https://filter-gearbox79886.bloguetechno.com/the-fact-about-filter-gearbox-that-no-one-is-suggesting-69197100