Features: Mass air flow sensor allows the vehicle to detect the mass of airflow entering the engine necessary for proper fuel mixture. Mass air flow sensor can easily be located beside the air intake box inside the engine bay. To ensure the correct output signal during operation, each MAF sensor is double calibrated before packing. This is non-OEM product, accessory ONLY! OE Number:13621734655Specification: Color: Black, Silver Tone Material: Plastic, Metal Size: 16.8x15.5x10.2cm / 6.61"x6.10"x4.02"(L*W*H) Pin Number: 5 Fit for:for BMW E30 E36 E34 318i 518i Z3 1990-1995 1.8LPackage Includes:1 Pcs Mass Air Flow MAF Sensor