Starters are electric motors used to initiate combustion engine rotation, enabling vehicle startup. Typically mounted to the engine block or transmission, they engage with the flywheel ring gear via a pinion gear. Operation involves a high-current draw from the vehicle’s battery, activated by the ignition switch signal. Modern starters utilize a solenoid to extend the pinion and simultaneously engage the motor circuit. Key features include pinion type (pre-engaged vs. direct drive), voltage, kilowatt rating, and housing configuration—all dictated by engine and vehicle specifications.