Genuine OEM Volkswagen Fuel Supply Unit, part number 5QN919051C. This unit is responsible for supplying fuel to the engine and also contains a transmitter for measuring the fuel level. It is located within the fuel tank assembly. This part weighs 1.61 kg and has dimensions of 0.235m x 0.155m x 0.23m. Genuine OEM fuel supply units ensure precise fuel delivery and accurate level readings, crucial for engine performance and preventing fuel starvation.