Walker 250-241308 Oxygen Sensor - Downstream Front or Downstream Rear

Walker OE Base Oxygen Sensor for Kia

Walker OE Base Sensor 250-241308 is a direct-fit, heated narrow-band oxygen sensor built for specific vehicle applications. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring on select Kia models.

Key Features

• Heated narrow-band oxygen sensor for standard replacement service
• Specific-fit design for the correct mounting position and connector style
• 4-wire configuration with rectangular female connector and male spade terminals
• M18 x 1.5 thread size with threaded mounting
• Wiring harness length: 730.00; overall length: 763.00
• Walker OE Base Sensor line for OE-style engine management replacement

Detailed Description

Walker Products 250-241308 is an emission control oxygen sensor designed for precise application coverage on 2019-2021 Kia Sedona, downstream rear, and 2019-2020 Kia Cadenza, downstream front. This Walker oxygen sensor is a specific-fit replacement that matches the required position, connector layout, and sensor type for the listed vehicles. The OE Base Sensor line focuses on application-specific engine management coverage, making this part number 250-241308 a practical choice when replacing a failed downstream sensor on a Kia Sedona or Kia Cadenza.

As a heated narrow-band sensor, it supports the ECU with the feedback needed to monitor exhaust conditions and maintain proper system operation. Walker Products has long supplied engine management and oxygen/air-fuel sensors for OE-style replacement use, and this sensor is built to the listed fitment and terminal requirements.

What It Helps Address

• Check engine or malfunction indicator light related to oxygen sensor performance
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough engine operation tied to sensor signal issues
• Elevated exhaust emissions from a worn downstream oxygen sensor
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes and Tips

Verify the vehicle application, year, and sensor position before installation. For the 2019-2021 Kia Sedona, this sensor is for the downstream rear position; for the 2019-2020 Kia Cadenza, it is for the downstream front position. Inspect the sensor wiring harness and connector for physical damage before replacement, since damaged wiring can shorten sensor life and affect operation. Confirm the M18 x 1.5 thread size and 22 mm wrench size match the service location.

Quality Assurance

Walker Products manufactures engine management sensors as OE-style replacement parts and operates as an ISO 9001/TS 16949 certified company. The OE Base Sensor line is built around application-specific fitment and diagnostic feedback requirements for the listed Kia vehicles.