Genuine OEM Audi Fuel Level Sender Unit, part number 4E0919673A. This sensor is responsible for accurately measuring the amount of fuel remaining in the fuel tank and transmitting this data to the vehicle's fuel gauge. It is installed on the right side within the fuel tank. Weighing approximately 0.14 kg and measuring 20 cm x 12 cm x 7 cm. Opting for a genuine OEM fuel level sender ensures accurate readings, correct electrical calibration, and resistance to fuel contaminants, providing reliable fuel level information to the driver.