A clutch is a crucial component in any transmission, regardless of whether your car has a manual or automatic gearbox. As we know, the engine of your car is responsible for creating power. This power is then passed onto the engine's crankshaft, which transmits that power onto the flywheel. From there, it passes off that power onto the gearbox to allow all that energy to be controlled. And then finally, going to your car's driven wheels. However, between the transmission and flywheel is where you'll find the clutch. This clutch functions to disengage your transmission from your engine. Hence, allowing a momentary gap where there's no power running through the transmission, permitting you to change gears. The clutch then re-engages the transmission with the engine's flywheel once it's ready to transmit power across to the wheels.