Genuine OEM Volkswagen Fuel Gauge Sender, part number 5Q0919673AT. This essential sensor is located within the fuel tank, typically integrated with the fuel pump assembly. Its primary function is to accurately measure the current fuel level and transmit this information to the vehicle's instrument cluster, allowing the driver to monitor fuel reserves. The sender unit utilizes a float mechanism to determine the fuel volume. Weighing 0.0389 kg and measuring approximately 24 cm in length, this is a precise electronic component. Choosing genuine OEM ensures accurate calibration, reliable electrical signals, and durable construction resistant to fuel exposure, providing precise fuel level readings and preventing erroneous gauge indications.