Walker 350-31008 Oxygen Sensor - Upstream

Walker 350-31008 Oxygen Sensor for Honda Civic

Walker Products 350-31008 is a specific-fit oxygen sensor engineered as an OE-style replacement for select Honda Civic applications. It is built to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions monitoring on older vehicles.

Key Features

• Specific-fit oxygen sensor for targeted vehicle applications
• Non-heated sensor design
• Threaded mounting type with 18.0 mm thread diameter
• Female connector with radiused polygon shape
• 22.36 in. wiring harness length and 20-gauge wire
• Overall length: 25.91 in.

Product Details

The Walker Products Aftermarket line focuses on engine management and oxygen/air-fuel sensors built for direct replacement use. Part number 350-31008 is designed for the upstream position and is listed for 1984-1987 Honda Civic applications, including Bank 1 Sensor 1 and front oxygen sensor locations. For buyers searching for a 1984 Honda Civic upstream oxygen sensor, 1985-1987 Honda Civic front oxygen sensor, or Walker 350-31008 replacement sensor, this part provides the application-specific fitment needed for the ECU to receive the correct signal.

Walker Products has long supplied engine management components for vehicle service needs, and this sensor follows that approach with application-specific fitment and connector design. If the original sensor is failing, the vehicle may store fault codes, run rich or lean, increase fuel consumption, or trigger the malfunction indicator light. This part number, 350-31008, is intended for those exact repair scenarios on Honda Civic models listed below.

What It Helps Address

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

Installation Notes

Before replacement, inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals. Confirm the threaded mounting location and connector style match the original part before installation. This sensor is listed for the upstream position on 1984-1987 Honda Civic models, so verify the vehicle’s sensor location and engine configuration against the catalog listing before service.

• Fits 1984-1987 Honda Civic, upstream
• Fits 1984-1987 Honda Civic, upstream

Quality Assurance

Walker Products manufactures engine management sensors as OE-replacement components for specific applications and supports its product line with ISO 9001/TS 16949 certified manufacturing practices. Part number 350-31008 is built for application-specific fitment and ECU feedback requirements.