09 Sonata Lingxiang 2.0L/2.4L Front Oxygen Sensor 39210-25130

2009 Sonata YF 2.0L/2.4L pre-cat oxygen sensor, 39210-25130, installed at the front of the exhaust pipe, before the catalytic converter. Real-time monitoring of oxygen content in exhaust gas and feeding signals to the ECU to precisely adjust the air–fuel ratio, ensuring efficient combustion and compliant emissions. OEM number 39210-25130, fits the entire 2.0L/2.4L engine lineup. Installation difficulty: medium; recommended labor 0.5–1 hour; requires a special socket for removal. If the vehicle experiences idle instability, increased fuel consumption, sluggish acceleration, or check engine light, have it inspected/replaced promptly.