Clutch or torque converter-clutch with Manual transmission or torque converter with automatic-allows smooth transfer of power from the engine to the transmission.
Transaxleis actually the combined transmission and driving axles in a compact unit, saving weight and space inside the passenger compartment.
CV (constant velocity) jointsgives power to the wheels, twisting and flexing like a wrist joint as the steering wheels turn and the suspension goes over bumps. They are packed with grease and covered with rubber boots.
Transmissionwhether front drive or rear, this Is the gear shifting mechanism which matches engine speed to road speed and load.
Universal jointsoffers flexibility on a rear drive vehicle between the transmission and the rear axle, letting the axle to move with the irregularities in the road.
Drive shaftis the tubular part connecting the transmission to the rear axle.
Differentialis the round housing at the center of the rear axle. It channels power to the driving wheels and, through its gearing mechanism, permits wheels to turn at different speeds in turns.