AF Sensor, Air-Fuel Sensor, AFR Sensor, Oxygen Sensor, O2 Sensor, Wideband Sensor, Male. Air/Fuel Sensor. MAF Motorcraft Mass Air Flow Sensor 3L3A-12B579-BA for Ford Mazda F150 AFLS131. Porous PTFE Filter - Allows Atmospheric Oxygen To Enter The Sensor w/o Permitting Water Or Engine Contaminants To Seep Into The Casing.
