Walker 250-54110 Oxygen Sensor - Upstream

Walker Products OE Oxygen Sensor 250-54110

Walker Products OE 250-54110 is a heated upstream oxygen sensor built as a specific-fit replacement for select Honda and Acura applications. It is engineered to provide the ECU with the feedback needed for accurate fuel control and emissions monitoring.

Use this Walker oxygen sensor when servicing an upstream sensor on vehicles such as the Honda Accord, Honda CR-V, Honda City, Acura TSX, and Acura RDX.

Key Features

• Specific-fit heated oxygen sensor for upstream placement
• 4-wire design with 20-gauge wiring
• Radiused polygon male connector for application-specific fitment
• Threaded mounting with 18.0 mm thread diameter
• Overall length: 14.88 in.; wiring harness length: 11.34 in.
• Walker Products OE line replacement for select Honda and Acura vehicles

Application Details

Walker Products OE focuses on original-equipment-style replacement sensors matched to the vehicle’s required position and diagnostic feedback. Part number 250-54110 is an upstream heated oxygen sensor for select 2007-2020 Honda and Acura models, including 2010-2016 Honda City, 2018-2020 Honda City, 2008-2012 Honda Accord, 2010-2011 Honda CR-V, 2007-2012 Acura RDX, and 2009-2014 Acura TSX. This part number 250-54110 is built for the specified sensor location so the ECU receives the correct signal for air-fuel management and emissions control.

What It Helps Address

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

Installation Notes

Confirm the vehicle’s sensor position before ordering, since this part is for upstream applications only. Inspect the sensor wiring harness and connector for damage during diagnosis, and verify the threaded mounting location and connector style match the original unit. For best results, compare the existing sensor’s physical dimensions and connector shape before installation.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and manufactures OE-style replacement sensors for specific vehicle applications. The company is ISO 9001/TS 16949 certified, supporting consistent production and application-specific fitment.