Walker 250-25176 Oxygen Sensor - Upstream Left or Upstream Right

Walker OE Base Oxygen Sensor 250-25176

Walker OE Base Sensor 250-25176 is a specific-fit wide-band oxygen sensor for vehicles that need accurate exhaust feedback to the ECU. It is a heated sensor with a 5-wire, female oblong connector and M18 x 1.5 thread size for direct replacement in the listed Ford applications.

Key Features

• Wide-band oxygen sensor for precise air-fuel monitoring
• Heated design for faster operating temperature and signal response
• Specific-fit application for the listed Ford vehicles
• 5-wire configuration with spade terminals
• Female oblong connector shape for OE-style connection
• 22 mm wrench size and M18 x 1.5 thread size

Product Details

Walker Products OE Base Sensor line is built as an OE replacement sensor family for application-specific fitment and diagnostic feedback. Part number 250-25176 is engineered for the correct sensor position and ECU input on the covered Ford models, helping maintain proper exhaust monitoring on upstream applications. This part number 250-25176 is listed for 2021-2025 Ford E-350 Super Duty upstream left, 2022-2024 Ford F-150 upstream right, 2020-2023 Ford Explorer upstream right, and 2020-2022 Ford Mustang upstream right. It is also a relevant search match for Ford F-150 upstream right oxygen sensor replacement and Ford Explorer upstream right wide-band O2 sensor service.

Walker Products has supplied engine management and oxygen/air-fuel sensors since 1946 and manufactures electronic components under ISO 9001/TS 16949 quality systems. This part cross-references Bosch (e.g., 172286) for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect air-fuel feedback
• Rough engine operation from inaccurate exhaust readings
• Elevated exhaust emissions from a failing upstream sensor
• Fault codes stored in the ECU for sensor or related system faults

Installation Notes

Confirm the sensor position before installation, since this part is listed for upstream left and upstream right locations depending on vehicle application. Inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals before replacement. Verify thread size, connector shape, and terminal count against the original sensor to ensure proper OE-style fitment on the Ford E-350 Super Duty, F-150, Explorer, or Mustang.

Quality Assurance

Walker Products manufactures this OE Base Sensor under ISO 9001/TS 16949 quality standards and builds it as an application-specific replacement for the listed vehicles. The brand’s engine management sensor experience supports consistent fitment and diagnostic system feedback for the covered Ford applications.