2009 New Santa Fe Oxygen Sensor 39210-3E220, high-quality alternative.

2009 Hyundai Santa Fe 2.4L and 2.7L oxygen sensor, OEM 39210-3E220, installed on exhaust pipe to monitor exhaust oxygen content in real-time, assist ECU in precise control of air-fuel ratio; improve combustion efficiency and emissions. Installation time about 0.5-1 hour; avoid thread damage. If idle unstable, fuel consumption rises, or acceleration weakens, replace promptly.