Genuine OEM Volkswagen Mass Air Flow Meter, part number 06A906461GV. This component measures the amount of air entering the engine, providing critical data for the engine control unit to calculate the correct fuel injection. It is located in the intake system, typically between the air filter housing and the throttle body. Genuine OEM mass air flow meters are precisely calibrated to ensure accurate readings, which is vital for optimal engine performance, fuel efficiency, and emissions control.