Ford Lincoln Oxygen Sensor 8F9A-9Y460-GA Air-Fuel Ratio Monitoring Original Quality

When Ford or Lincoln models show check engine light, rough idle, noticeably higher fuel consumption, or sluggish acceleration, the oxygen sensor aging or failure is likely causing inaccurate air-fuel ratio signals. This sensor normally monitors oxygen content in exhaust and feeds signals to the ECU to precisely adjust fuel injection for efficient combustion and reduced emissions. OEM number is 8F9A-9Y460-GA, compatible with Ford Focus, Mondeo, and Lincoln MKZ among others. Use a dedicated socket during installation to avoid overtightening and damaging threads, and ensure the sensor harness is firmly connected to prevent loose connections and false readings.