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The NGK direct-fit oxygen sensor for Ford Focus (2003–2007) replaces the factory unit and delivers continuous closed-loop OBDII feedback to the engine control unit to support proper air-fuel ratio, engine performance and emissions control. Constructed with refined ceramic sensor technology and a 3-stage contaminant-resistant plasma jet plus deposit-trap overcoat, the element resists poisoning and aims to improve service life while maintaining OE-level compatibility.
NGK Ford Focus 2007-2003 Direct Fit Oxygen Sensor
