Ford Mass Air Flow Sensor JX6A-12B579-DB Precise Intake Monitoring

Air flow mass sensor for Ford Focus/Mondeo/Edge and other models (OEM JX6A-12B579-DB) installed between intake manifold and air filter; precisely monitors air entering the engine and transmits data to ECU to optimize fuel injection and ignition timing. Installation medium; about 30-45 minutes; clean intake and avoid touching sensor elements. If idle is unstable, acceleration weak, fuel consumption abnormal, or engine light on, sensor failure is indicated.