The torque converter is what transfers energy from your motor for the gearbox. It is a fluid coupling that works by using hydraulic pressure to multiply the torque with the engine. The torque converter is built up of three principal pieces: the pump, the turbine, as well as the stator. https://filter-gearbox47913.blogtov.com/14592508/an-unbiased-view-of-filter-gearbox