Downstream Air Fuel Ratio Oxygen Sensor for Kia Optima, Magentis, Rondo 2.0L
Main description
The Downstream Air Fuel Ratio Oxygen Sensor for Kia Optima, Magentis, and Rondo 2.0L is a precise downstream sensor designed to monitor exhaust after the catalytic converter. By measuring the lambda/O2 balance further along the exhaust stream, it helps keep the engine’s air–fuel ratio optimal, reducing emissions and supporting steady fuel economy. Equipped with a heating function for rapid warm-up, this sensor delivers accurate readings quickly, improving throttle response and idle stability. A reliable OEM-grade replacement, it fits Kia Optima, Magentis, and Rondo 2.0L models and related Hyundai Sonata 2.4 applications, restoring performance and helping your vehicle pass emissions checks. Crafted to withstand harsh exhaust conditions, this sensor provides durable, long-lasting monitoring where it matters most.
Benefits & Tips
- Restore accurate downstream lambda readings to maintain proper fuel trim and cleaner exhaust.
- Improve idle stability and consistent fuel economy after installation by providing reliable O2 sensor data to the engine control unit.
- Choose this sensor as a precise replacement for worn or faulty downstream sensors on Kia Optima, Magentis, and Rondo 2.0L to maintain optimal performance and emissions compliance.
- Tip: After installation, allow the engine to reach operating temperature and clear fault codes to ensure the ECU recalibrates with the new sensor.
- Tip: When shopping, reference OEM No. 39210-25110 to confirm compatibility with your exact vehicle.
Product specifications
- Brand Name: IWOKPHD
- Part numbers (compatible): 39210-25110, 3921025110, 234-4439, 2344439, 19060387, 2133017, 2133929, SG1697, OS5586, 753895, 25024368, 25183, 15320, AP4-632, 250-24383, OS2534, ES11071
- Sensor Type: Piezoelectric
- Type: Heating Type
- Measuring Range: Rear Probe Air Fuel Ratio Lambda Oxygen O2 Sensor
- OEM No.: 39210-25110
- Origin: Mainland China
- Repeatability: 25183, 15320
- Hysteresis: 25183, 15320, AP4-632, 250-24383, OS2534, ES11071
- Application (selected): For Kia Optima/Magentis 2.0 2006-2009 (G4KA); For Kia Rondo 2007-2008; For Hyundai Sonata 2.4 2005-2010 (NF) and related variants
Package includes:
- 1 x Oxygen Sensor
Warnings / reminders
- Please check the part number carefully to ensure it matches your vehicle’s requirement.
- If you’re unsure which item fits your car, send the Part Number(s) or the original product photos to verify compatibility before ordering.
- The only way to be 100% sure the part fits your vehicle is to compare with your original part. We will check for you and reply within 24 hours.
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