A failing alternator will mean that your vehicle runs strictly on battery power, which will quickly deplete the battery until the engine dies. Shop Advance Auto Parts for OEM-quality alternators from brands like Carquest®, ACDelco®, and Bosch®, we'll even help you with diagnosis by testing your old alternator for free at your local store!
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The alternator on your car's engine is what keeps the battery charged and provides power to the electrical system and ignition while the engine's running. Without a properly functioning alternator, your engine would run strictly on battery power which would deplete the battery within a few minutes. Signs of a failing alternator can include a battery that's quickly exhausted, dim or flickering headlights, difficulty in starting, or an illuminated warning light. It's easy to diagnose a failing alternator - we can test it for you at your local store!