Starters and alternators are two different components of a car engine. Thanks to the starter motor, the engine goes from its stationary position to moving. On the other hand, the power supplied to the engine to keep the car moving is done by the alternator. So, together, starter motors and alternators form a whole that keeps the car moving. They have similar functions, but it is difficult to rule out what is causing the problem in the car when it stops working. Alternators-Starters — All Kinds Available- 2000 to 2023... Thank you