▶ REPLACES PART NUMBER: F81F12B579BA, XL3F12B579BA, XL3F-12B579-BA, F81F-12B579-BA, F81F 12B579BA, XL3F 12B579BA, 74-9554, MF0926, MAF169, AFH8006, AFLS174, AFLS158, AFH8006C. If you have symptoms like car runs rich at idle or lean under load / constantly runs rich or lean / rough idle or stalls, then you might need to replace your MAF Sensor.