Walker 250-241283 Oxygen Sensor

OE Base Oxygen Sensor for Hyundai and Kia

Walker OE Base Sensor 250-241283 is a specific-fit, heated narrow-band oxygen sensor built for direct replacement in select Hyundai and Kia applications. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring.

Fits 2025 Hyundai Palisade, downstream left; fits 2020-2024 Hyundai Palisade, downstream front; fits 2024 Kia Telluride, downstream left; and fits 2021-2023 Kia Telluride, downstream front. The Walker OE Base Sensor line focuses on application-specific fitment and sensor position for accurate service replacement.

Key Features

• Part number: 250-241283
• Heated narrow-band oxygen sensor
• Specific fit for the listed vehicle applications
• 4-wire design with 4 terminals
• Square female connector with male spade terminals
• M18 x 1.5 thread size and 22 mm wrench size
• Built for downstream and upstream positions shown in the fitment data

Detailed Description

Walker Products has developed the OE Base Sensor line as an OE-style replacement program for engine management and oxygen/air-fuel sensing needs. This sensor is manufactured for the listed application and position so the ECU receives the correct diagnostic feedback for emissions and fuel-system control. Part number 250-241283 is used across multiple Hyundai and Kia models, including Palisade, Telluride, Sportage, Tucson, Santa Fe, Sedona, Cadenza, Optima, Sorento, Sonata, K900, and Genesis applications listed below.

This oxygen sensor is a practical replacement when the original sensor has aged, been contaminated, or is no longer reporting accurately. Walker 250-241283 is designed around the OE Base Sensor concept, with fitment matched to the vehicle, mounting location, connector style, and thread specification.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough running or drivability issues tied to sensor signal loss
• Elevated exhaust emissions from a failing downstream or upstream sensor
• Stored ECU fault codes linked to the affected sensor circuit

Installation Notes and Tips

Confirm the exact year, make, model, and sensor position before ordering. This part uses a square connector, 4-wire layout, and M18 x 1.5 thread, so connector shape and mounting location should be matched to the original unit. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear before installation, since damaged wiring can shorten sensor life or trigger repeat faults.

For fitment reference, this part fits 2015-2016 Hyundai Genesis, upstream right; 2016-2017 Kia K900, upstream front; 2016-2018 Kia Sorento, downstream; 2015-2019 Hyundai Sonata, downstream; 2016-2020 Kia Optima, downstream; 2017-2020 Kia Cadenza, downstream rear; 2019-2020 Hyundai Santa Fe, downstream; 2019-2021 Hyundai Tucson, downstream; 2019-2021 Kia Sedona, downstream front; 2019-2020 Kia Sorento, downstream rear; 2020 Kia Telluride, downstream rear; 2021-2022 Kia Sportage, downstream; 2021-2023 Kia Telluride, downstream front; 2024 Kia Telluride, downstream left; and 2025 Hyundai Palisade, downstream left.

Quality Assurance

Walker Products manufactures engine management and oxygen sensor components as OE replacement parts for specific vehicle applications. The OE Base Sensor line is built to match the required fitment position and diagnostic feedback expected by the ECU, supporting accurate emissions-system service on the listed Hyundai and Kia vehicles. Part number 250-241283 reflects that application-specific approach.