Genuine OEM Volkswagen Alternator, part number 04C903026C. This alternator generates electrical power to charge the battery and supply electricity to the vehicle's electrical components while the engine is running. It is located at position 1 in the diagram. The alternator weighs 7.368 kg. Genuine OEM alternators are precisely engineered for reliable power output and longevity, ensuring consistent charging of the battery and stable operation of all electrical systems.