NTK 25202 Oxygen Sensor - Downstream

Direct Fit Oxygen Sensor for Hyundai and Kia

NTK 25202 is a direct fit heated oxygen sensor built for specific downstream applications on select Hyundai Tucson and Kia Sportage models. It is engineered for OE-style fit, form, and function, with a threaded mounting design and a 4-wire configuration for straightforward replacement.

Key Features

• Direct fit oxygen sensor for specific vehicle applications
• Heated sensor design for downstream exhaust monitoring
• 4-wire construction with a 17.25 in. wiring harness length
• 18 mm thread diameter and threaded mounting type
• Built to meet or exceed OE specifications through manufacturing testing
• NTK 25202 is part of the Direct Fit Oxygen Sensor line for import and domestic coverage

Product Details

NTK, the Sensor Specialist, manufactures oxygen sensors with control over ceramic materials from raw input to finished component. The Direct Fit Oxygen Sensor line is focused on OE application coverage and precise replacement fitment. NTK 25202 is a heated downstream oxygen sensor for select 2010-2013 Hyundai Tucson and 2011-2016 Kia Sportage applications, including B1S2 configurations listed in the fitment data. This part cross-references DENSO Auto Parts 234-4444 for the same application.

Common Issues This Sensor Can Address

• Check engine light related to downstream oxygen sensor performance
• Fault codes tied to B1S2 sensor readings
• Incorrect air-fuel feedback from a worn exhaust sensor
• Emissions test failures caused by a degraded oxygen sensor
• Rough or inconsistent engine management data from the exhaust stream

Installation Notes and Tips

• Fits 2010-2013 Hyundai Tucson, downstream.
• Fits 2011-2016 Kia Sportage, downstream.
• Verify the connector, wire count, and thread size before installation.
• Inspect the exhaust bung and wiring route for heat damage or corrosion before replacing the sensor.
• Confirm the vehicle’s emissions configuration and sensor position match the listed application.

Quality Assurance

NTK oxygen sensors are extensively tested during manufacturing to support quality and reliability that meet or exceed OE specifications. As an OE-focused sensor manufacturer, NTK supplies original equipment oxygen sensors for a wide range of import and domestic vehicles, including Hyundai Tucson and Kia Sportage applications.