Walker 250-54111 Oxygen Sensor - Upstream

Walker OE Oxygen Sensor for Honda and Acura

Walker Products OE oxygen sensor Part Number 250-54111 is a specific-fit, heated upstream sensor built for selected Honda and Acura applications. It is engineered to deliver the ECU feedback needed for accurate fuel control and emissions monitoring on vehicles such as the Honda Civic, Honda CR-Z, Honda Fit, Honda Insight, Honda City, Acura ILX, and Acura TSX.

Key Features

• Heated oxygen sensor for upstream placement
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 9.37 in.
• Overall length: 12.91 in.
• Walker Products OE line replacement for engine management and emissions service

Product Details

The Walker Products OE line focuses on direct replacement engine management components built for the original application and sensor position. Part Number 250-54111 is a heated upstream oxygen sensor designed for vehicles that rely on precise exhaust feedback to help the ECU manage air-fuel ratio and emissions performance. This sensor is listed for 2012-2015 Honda Civic upstream, 2007-2013 Honda Fit upstream, 2010-2013 Honda Insight upstream, 2012-2015 Honda CR-Z upstream, 2016 Honda City upstream, and 2013-2014 Acura ILX and TSX upstream applications. It is also a fitment match for Bank 1 Sensor 1 and front oxygen sensor positions where specified in the catalog data.

This part cross-references no listed aftermarket part numbers in the provided data. Walker Products has supplied engine management and oxygen sensor components since 1946, with OE-style application matching for the listed Honda and Acura models.

Common Issues This Sensor May Address

• Check engine light related to upstream oxygen sensor performance
• Rough engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel ratio control
• Higher exhaust emissions from a failing sensor signal
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Confirm the vehicle’s sensor position before ordering, since this part is specified for upstream use only. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation, and verify the threaded mounting point is clean and undamaged. Because this is a specific-fit oxygen sensor, matching the connector style, wire count, and application position is important for proper ECU feedback.

Quality Assurance

Walker Products OE sensors are developed as original-equipment replacement parts for defined vehicle applications and are manufactured under ISO 9001/TS 16949 quality systems. The brand’s OE-focused cataloging and application-specific design support accurate fitment for Honda Civic, Honda CR-Z, Honda Fit, Honda Insight, Honda City, Acura ILX, and Acura TSX upstream oxygen sensor service.