Walker 250-25167 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

OE Base Wide-Band Oxygen Sensor

Walker OE Base Sensor 250-25167 is a specific-fit, heated wide-band oxygen sensor built for direct replacement in select Porsche, Hyundai, Kia, Ford, Lincoln, and Saab applications. It provides the ECU with the exhaust feedback needed for accurate fuel control and emissions monitoring.

Key Features

• Heated wide-band oxygen sensor for precise exhaust feedback
• Specific-fit design for the listed upstream positions
• Female connector with oblong shape
• 5-wire configuration with 6 terminals
• M18 x 1.5 thread size and 22 mm wrench size
• Walker OE Base Sensor line for OE-style replacement coverage

Product Details

Walker Products developed the OE Base Sensor line as an original-equipment-style replacement for vehicle-specific engine management needs. Part number 250-25167 is engineered for the exact application and mounting position, including upstream right and upstream left locations where listed. This sensor is used on applications such as 2015-2018 Porsche Cayenne upstream right, 2012-2015 Hyundai Veloster upstream, and 2009-2011 Ford Expedition upstream left. It also covers select Kia Rio, Kia Soul, Lincoln Navigator, Ford F-150, Porsche 911, and Saab 9-3 applications.

This part cross-references no listed interchange numbers in the provided data.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback to the ECU
• Poor fuel economy caused by faulty exhaust sensing
• Rough engine operation tied to sensor signal loss
• Elevated exhaust emissions from inaccurate mixture control

Installation Notes and Tips

Verify the connector shape, terminal count, thread size, and sensor position before installation. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear, since damaged wiring can shorten sensor life and affect signal quality. Confirm the vehicle’s exact upstream location and engine configuration against the catalog listing before ordering.

Quality Assurance

Walker Products has manufactured engine management and oxygen sensor components since 1946 and operates as an ISO 9001/TS 16949 certified company. The OE Base Sensor line is built for application-specific fitment and ECU feedback requirements.