What Is A Crankshaft In A Car: Function And Symptoms Of Malfunction What Is A Crankshaft? A crankshaft is a part in a reciprocating engine that rotates due to the reciprocating motion of the pistons. However in a pump, the crankshaft's motion causes the piston to move... Timing Chain & Belt 05/23/2024 08:15:15 0 1560