FAERSI Mass Air Flow Sensor Meter MAF 13627566983 5WK9642Z Compatible with BMW 330i 330Ci 330xi Z4 X3, 2003 2004 2005 2006 330Ci 3.0L, 2002-2005 330i 330XI 3.0L, 2004-2006 X3 3.0L & 2003 Z4 3.0L L6

What is a maf sensor? MAF SENSOR also known as Mass Air Flow Meter/ Air Flow Sensor/ Air Mass Meter/ Air Mass Sensor. It s the device used in many fuel injected engines to measure the amount of air entering the engine so the onboard computer (ECU) can calculate the correct air/fuel mixture ratio to enter the combustion chambers. Located ahead of the throttle body, after the air filter, the MAF sensor uses a heated wire or filament/film to measure the air flow. 5WK9642Z BMW Mass Air Flow Sensor Compatible with: 2003 2004 2005 2006 BMW 330Ci Base 3L l6 mass air flow sensor 2005 BMW 330Ci M 3L l6 mass air flow sensor 2002 2003 2004 2005 BMW 330i Base 3L l6 mass air flow sensor 2005 BMW 330i M 3L l6 mass air flow sensor 2002 2003 2004 2005 BMW 330xi Base 3L l6 mass air flow sensor 2004 2005 2006 BMW X3 3.0i 3L l6 mass air flow sensor 2003 BMW Z4 3.0i 3L l6 mass air flow sensor How To Install The Replacement Mass Air Flow Meter Sensor: 1. Position MAF sensor in the vehicle. Make sure the airflow direction indicated on the sensor is toward the engine. 2. Install sensor-to-air-duct seal(s), if so equipped, on the replacement MAF sensor. 3. Connect the MAF sensor to the throttle body air cleaner ducts. If the sensor mounts directly on the throttle body, install and tighten the mounting screws to 10 ft-lb. DO NOT OVERTIGHTEN! 4. Position clamps over the air duct/MAF sensor connections and tighten; Replace the clamps if necessary.NOTE: For the MAF sensor to work properly, the sensor/air duct connections must be airtight. 5.CAREFULLY plug the harness connector lead into the MAF sensor. Package Included: 1 x Mass Air Flow Sensor