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Air mass sensor for Audi A4 B5 (1994–2001), OEM references 4D0905351 and 0227100211. This sensor measures the mass flow of air into the engine and sends the signal to the engine control unit for fuel injection calibration. Removed from a donor vehicle; verify OEM codes against your original unit before ordering to ensure correct fitment.
Air mass sensor for Audi A4 B5 (1994–2001), OEM references 4D0905351 and 0227100211. This sensor measures the mass flow of air into the engine and sends the signal to the engine control unit for fuel injection calibration. Removed from a donor vehicle; verify OEM codes against your original unit before ordering to ensure correct fitment.
