Hyundai Oxygen Sensor 39210-02900 Replaces OEM 39210-03000/2B000

When your Hyundai car shows idle instability, obviously increased fuel consumption, or check engine light on, typically the oxygen sensor has aged and failed to monitor exhaust oxygen accurately. This sensor’s function is to feed the ECU the air–fuel ratio signal. OEM number 39210-02900; compatible with factory 39210-03000 and 39210-2B000; fits many Hyundai models. Install with a dedicated socket to avoid damaging threads; ensure sensor harness does not contact the exhaust.