This part is known as the alternator , a key component in JAC GA4 (2018-2022) and GS3 (2018-2023) car engines. Its primary function is to convert mechanical energy (derived from the engine's rotation via the belt) into electrical energy . This electrical energy is used to charge the car's battery and power all the car's electrical systems while the engine is running (such as lights, air conditioning, ignition, and the infotainment system).
If you notice the battery light on the dashboard constantly or intermittently illuminating , or the headlights dimming, especially when stopped, or frequent difficulty starting the car, this often indicates a weak or damaged alternator.
⚠️ Important Notice: Please make sure the part matches your vehicle's chassis number before purchasing the product or after ordering.