The torque converter is what transfers power through the motor on the gearbox. It's really a fluid coupling that works by using hydraulic stress to multiply the torque in the motor. The torque converter is manufactured up of a few main parts: the pump, the turbine, plus the stator. Essentially https://filter-gearbox95048.blogdanica.com/34053280/an-unbiased-view-of-filter-gearbox