Most important shaft: It is usually called an output shaft. It provides obligatory torque to the car or truck. It's ridges and enamel And so the gears can move efficiently. The Gearbox gives the relative motion involving engine and driving wheels as a result of flexing of the highway spring. https://gearbox-auto50491.activablog.com/32949040/how-gearbox-auto-can-save-you-time-stress-and-money