Genuine OEM Audi Mass Air Flow Sensor, part number 06D906461. This sensor measures the amount of air entering the engine, providing crucial data to the engine control unit for optimal fuel mixture and combustion. It is typically located in the intake system between the air filter box and the throttle body. Weighing approximately 0.268 kg, this sensor is made from durable plastic and electronic components. Choosing a genuine OEM sensor ensures accurate readings and reliable engine operation, maintaining factory performance and emissions standards.