Genuine OEM Audi Air Mass Meter, part number 07D906461. This vital sensor is positioned in the engine's intake system to precisely measure the mass of air flowing into the engine. It sends this crucial data to the engine control unit (ECU), which then calculates the correct amount of fuel to inject for optimal combustion, emissions, and performance. Housed in a durable black plastic casing, this sensor is engineered for accuracy and reliability. Opting for a genuine OEM air mass meter ensures exact calibration and signal characteristics, which are critical for maintaining factory-specified engine efficiency and emissions compliance.