The torque converter is exactly what transfers ability with the engine to your gearbox. It's a fluid coupling that takes advantage of hydraulic pressure to multiply the torque on the engine. The torque converter is created up of a few main parts: the pump, the turbine, along with the stator. https://troydoxcg.wssblogs.com/34038917/indicators-on-filter-gearbox-you-should-know