Walker 350-64093 Oxygen Sensor - Upstream

Walker 350-64093 Upstream Oxygen Sensor

Walker Products 350-64093 is a specific-fit heated upstream oxygen sensor engineered as an OE-style replacement for select Honda and Acura applications. It is built to deliver the ECU feedback needed for proper fuel control and emissions monitoring on vehicles such as the Honda Civic, Honda CR-Z, Honda Fit, Honda Insight, Acura ILX, and Acura TSX.

Key Features

• Heated oxygen sensor for upstream placement
• Specific-fit design for direct application matching
• 4-wire configuration with male connector
• 18.0 mm thread diameter and threaded mounting type
• Radiused polygon connector shape for application-specific fitment
• Wiring harness length: 9.37 in.; overall length: 12.91 in.
• Walker Products Aftermarket engine management sensor line

Product Details

The Walker Products Aftermarket line focuses on engine management and oxygen/air-fuel sensors developed as replacement parts for original equipment applications. Part number 350-64093 is designed for upstream sensor locations and is used where the ECU relies on accurate exhaust-gas feedback to manage air-fuel ratio and emissions performance. This part cross-references OE-style replacement applications for the same vehicle coverage. Walker 350-64093 is a practical choice when servicing a Honda Civic upstream oxygen sensor, a Honda CR-Z front oxygen sensor, or an Acura ILX B1S1 application.

What It Helps Address

• Check engine light or malfunction indicator light related to oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel control
• Higher exhaust emissions from a failing upstream sensor
• Fault codes stored in the ECU for sensor or related system issues

Fitment Notes and Installation Tips

• Fits 2016 Honda City, upstream; Bank 1 Sensor 1 needs an upstream oxygen sensor.
• Fits 2016 Honda CR-Z, upstream; OE replacement.
• Fits 2015 Honda Civic, upstream; Bank 1 Sensor 1 needs an upstream oxygen sensor.
• Fits 2012-2013 Honda Civic, upstream; Bank 1 Sensor 1 needs an upstream oxygen sensor.
• Fits 2014 Acura ILX, upstream; B1S1.
• Fits 2014 Acura TSX, upstream; Bank 1 Sensor 1 needs an upstream oxygen sensor.
• Fits 2007-2013 Honda Fit, upstream; Bank 1 Sensor 1 needs an upstream oxygen sensor.
• Fits 2010-2013 Honda Insight, upstream; Bank 1 Sensor 1 needs an upstream oxygen sensor.

Before replacement, inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion. Confirm the upstream location and connector style match the vehicle application, and verify the thread diameter and mounting type before installation. For Honda Civic and Acura ILX service, matching the correct Bank 1 Sensor 1 position is important for accurate ECU feedback.

Quality Assurance

Walker Products has manufactured engine management components since 1946 and operates with Automotive ISO 9001/TS 16949 certification. The 350-64093 oxygen sensor is built as a specific application replacement to support consistent diagnostic feedback for the ECU.