Walker 250-54114 Oxygen Sensor

Walker Products OE Oxygen Sensor 250-54114

Walker Products OE 250-54114 is a heated oxygen sensor built as a direct replacement for specific upstream applications. It is engineered for ECU feedback on vehicles that rely on accurate exhaust-gas monitoring to manage fuel delivery and emissions.

Compatible With Acura ILX, Subaru Legacy, Subaru Outback, Subaru Tribeca, Subaru B9 Tribeca, Toyota Camry, and Lexus ES300 applications listed below, this Walker oxygen sensor is a specific-fit, threaded sensor with a 4-wire design and male connector.

Key Features

• Heated oxygen sensor for upstream exhaust monitoring
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector for application-specific connection
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 5.43 in.; overall length: 8.98 in.
• Walker Products OE part number 250-54114

Product Details

Walker Products OE focuses on engine management and oxygen/air-fuel sensors engineered as OE replacement parts for worldwide vehicle applications. Part number 250-54114 is built for the specified fitment position and provides the diagnostic feedback the ECU expects from the upstream sensor location. This matters on vehicles such as the 2014 Acura ILX, 2002-2006 Toyota Camry, and 2002-2003 Lexus ES300, where accurate upstream sensor input supports proper air-fuel control and emissions monitoring. The Walker Products OE line is backed by the company’s long-running experience in engine management components and ISO 9001/TS 16949-certified manufacturing practices.

This part cross-references Walker Products OE 250-54114 for the same application.

What It Helps Address

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

Installation Notes

Install this sensor in the listed upstream position only. Confirm connector shape, wire count, thread diameter, and harness length before installation. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten sensor life and affect signal quality. For best results, verify the vehicle’s fault codes and sensor location before replacing the part.

Quality Assurance

Walker Products OE manufactures this oxygen sensor as an OE-style replacement for the specified application and fitment position. The brand’s ISO 9001/TS 16949-certified production standards support consistent sensor output and application-specific ECU feedback.

Fitment

• Fits 2014 Acura ILX, upstream.
• Fits 2008-2009 Subaru Legacy, upstream right.
• Fits 2008-2009 Subaru Legacy, upstream left.
• Fits 2006-2009 Subaru Outback, upstream right.
• Fits 2006-2009 Subaru Outback, upstream left.
• Fits 2008-2009 Subaru Tribeca, upstream right.
• Fits 2008-2009 Subaru Tribeca, upstream left.
• Fits 2006-2007 Subaru B9 Tribeca, upstream right.
• Fits 2006-2007 Subaru B9 Tribeca, upstream left.
• Fits 2002-2006 Toyota Camry, upstream front.
• Fits 2005 Subaru Outback, upstream.
• Fits 2002-2003 Lexus ES300, upstream front.