The car crank is a crucial automotive component which transmits the power developed by engine to other parts of the vehicle. Basically, it serves as a link between input and output of the vehicle. Without a car crankshaft, your vehicle won’t even move an inch though your engine will be running. You might have already know that due to the fuel combustion in the cylinder, energy is produced and as a result piston moves downwards during the power stroke. This motion of the piston is converted to rotary motion of the crank and along with the crank, crankshaft also rotates. The auto crankshaft is further connected to the gearbox and is responsible for the transmission of the power.