Genuine OEM Audi Mass Air Flow Meter, part number 07C906461A. This sensor measures the volume and density of air entering the engine's intake system, providing crucial data to the engine control unit (ECU) for optimal fuel injection and ignition timing. It is typically located in the intake ducting between the air filter box and the throttle body. Manufactured to precise specifications for accurate readings. Genuine OEM mass air flow meters ensure the correct air-fuel ratio for optimal engine performance, fuel economy, and emissions control.