Ford Air Flow Sensor PC3A-12B579-AB — Precise intake measurement, replaces original KLP specification

For Ford Focus, Mondeo, Kuga and other models, replaceable air flow sensor OEM PC3A-12B579-AB (KLP standard). Mounted between intake manifold and air filter; measures intake air in real time and transmits data to ECU to optimize air-fuel ratio and ignition timing. Installation difficulty: medium; about 30-45 minutes; ensure intake plumbing is clean and avoid touching sensing element. Idle instability, sluggish acceleration, abnormal fuel consumption, or engine fault lights usually due to carbon buildup or aging.