Walker 250-25165 Oxygen Sensor - Upstream or Upstream Right

Walker OE Base Wide-Band Oxygen Sensor

The Walker OE Base Sensor 250-25165 is a specific-fit wide-band oxygen sensor for select Ford Mustang and Ram truck applications. It is built for upstream placement and provides the ECU with the feedback needed to monitor air-fuel control and emissions performance.

Key Features

• Wide-band oxygen sensor for precise exhaust feedback
• Heated design for faster operating temperature
• Specific-fit application for direct vehicle matching
• 5-wire configuration with oblong female connector
• 6 terminals, male terminal gender, and spade terminal type
• M18 x 1.5 thread size with 22 mm wrench size
• OE Base Sensor line for application-specific replacement

Product Details

Walker Products engineers its engine management sensors as OE replacement parts for defined vehicle applications, and the OE Base Sensor line focuses on fitment, connector style, and sensor position. Part number 250-25165 is an upstream wide-band oxygen sensor used on 2013-2014 Ford Mustang, 2011-2012 Ram 2500, 2012 Ram 3500, 2011 Ford Mustang B1S1, and 2007-2010 Dodge Ram 2500 and Dodge Ram 3500 applications. For buyers searching for a 2013-2014 Ford Mustang upstream right oxygen sensor or a 2007-2010 Dodge Ram 2500 upstream O2 sensor, this part number 250-25165 matches the listed configuration and connector requirements.

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 issues

Installation Notes and Tips

Confirm the connector shape, wire count, terminal layout, 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 ECU feedback. This part is listed for upstream right and upstream positions only, so match the vehicle application exactly before ordering.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 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 vehicles. This part number 250-25165 is part of Walker's OE replacement sensor range for Ford Mustang and Ram applications.