Walker 250-25130 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Walker OE Oxygen Sensor for Mitsubishi

Walker Products OE oxygen sensor 250-25130 is an OE-style replacement built for specific vehicle applications and sensor locations. It provides the ECU with the feedback needed for fuel control and emissions monitoring on select Mitsubishi Outlander and Montero models.

The Walker Products OE line focuses on application-specific fitment, so the sensor position, connector, and signal output are matched to the vehicle’s diagnostic requirements. For Mitsubishi Outlander oxygen sensor replacement needs, this part number 250-25130 is listed for upstream locations on 2014-2020 models.

Key Features

• OE replacement oxygen sensor from Walker Products OE
• Application-specific fitment for upstream sensor positions
• Supports ECU feedback for air-fuel and emissions management
• Listed for Mitsubishi Outlander and Mitsubishi Montero applications
• Part number: 250-25130

Detailed Description

Walker Products has engineered this oxygen sensor as an original-equipment replacement for the listed vehicles, with attention to fitment position and diagnostic system feedback. On modern vehicles, the oxygen sensor plays a direct role in engine management, helping the ECU adjust fuel delivery and monitor emissions performance. This makes the 250-25130 a relevant replacement when the original sensor is no longer reporting accurately.

Compatible applications include 2014-2017 Mitsubishi Outlander, upstream; 2018-2020 Mitsubishi Outlander, upstream; and 2016 Mitsubishi Montero, upstream left or upstream right. If you are searching for a 2018 Mitsubishi Outlander upstream oxygen sensor or a 2016 Mitsubishi Montero upstream oxygen sensor, this Walker Products OE part is listed for those positions.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate sensor readings
• Higher exhaust emissions from a failing upstream sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Confirm the vehicle year, model, and sensor position before ordering. For the Mitsubishi Outlander, this part is listed for upstream use only; for the 2016 Mitsubishi Montero, verify whether the application is upstream left or upstream right. Inspect the sensor wiring harness and connector for damage before installation, since physical wear can shorten sensor life and affect operation.

Quality Assurance

Walker Products manufactures engine management and oxygen/air-fuel sensors as OE replacement parts and operates as an ISO 9001 / TS 16949 certified company. The Walker Products OE line is built around application-specific coverage for proper vehicle fitment and ECU feedback. Part number 250-25130 is part of that OE-focused product line.