Walker 350-64011 Oxygen Sensor - Upstream

Walker 350-64011 Oxygen Sensor Overview

Walker Products 350-64011 is a heated oxygen sensor built as a specific-fit OE replacement for select Honda Civic and Acura RSX applications. It is engineered to provide the ECU with the exhaust feedback needed for proper fuel control and emissions monitoring.

For drivers searching for an upstream oxygen sensor for 2002-2005 Honda Civic or 2002-2004 Acura RSX, this Walker Products Aftermarket sensor is matched to the listed position and connector style for direct application coverage.

Key Features

• Specific-fit heated oxygen sensor for upstream placement
• Part number: 350-64011
• 4-wire design with 20-gauge wiring
• Radiused polygon male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 8.39 in.
• Overall length: 11.93 in.
• Walker Products Aftermarket engine management sensor line

Application Details

This oxygen sensor is designed for upstream use on 2002-2005 Honda Civic and 2002-2004 Acura RSX models. It is a direct-fit replacement for Bank 1 Sensor 1 and front oxygen sensor positions listed in the fitment data. The Walker 350-64011 is built to deliver the diagnostic feedback the ECU expects from the original sensor location.

Walker Products has supplied engine management and oxygen/air-fuel sensors since 1946, with OE-style replacement coverage for many vehicles worldwide. The 350-64011 reflects that focus with application-specific fitment, connector configuration, and sensor design for the listed Honda and Acura vehicles.

What It Helps Address

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

Installation Notes

• Confirm the vehicle is listed in the fitment data before ordering.
• Inspect the sensor wiring harness and connector for damage before installation.
• Verify the upstream Bank 1 Sensor 1 or front sensor location on the vehicle.
• Check the exhaust bung threads and mounting surface before threading in the sensor.
• Use the connector shape and wire count to match the original harness layout.

Quality Assurance

Walker Products manufactures engine management sensors as OE-style replacements for specific applications and fitment positions. The 350-64011 is built for the listed Honda Civic and Acura RSX upstream oxygen sensor applications and is backed by Walker Products’ long-standing focus on emissions and fuel system components.