Downstream O2 Sensor 39351-2U001

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Ensure accurate emissions monitoring and efficient engine performance with this downstream oxygen (O2) / lambda sensor, part number 39351-2U001. Designed for compatibility with a range of models including Kia Ceed, Kia Optima, Hyundai Kona, Hyundai Tucson, Hyundai i30, and Hyundai i40.

This downstream sensor monitors the efficiency of the catalytic converter by measuring oxygen levels in the exhaust after combustion. It sends precise data to the engine control unit (ECU), helping maintain emissions compliance and proper system performance.

Replacing part number 9025100007, this sensor is built for durability and long-term reliability. Its direct-fit design with factory-style connectors allows for straightforward installation without modifications.

Ideal for replacing a faulty or aging sensor, this lambda sensor helps maintain proper emissions control, supports engine efficiency, and ensures smooth vehicle operation.