Walker 350-34086 Oxygen Sensor - Upstream

Walker 350-34086 Oxygen Sensor for Honda

Walker Products 350-34086 is a heated, specific-fit oxygen sensor engineered as an OE-style replacement for select Honda applications. It is built for upstream placement and provides the ECU with the feedback needed for accurate fuel control and emissions monitoring.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for the listed Honda applications
• 4-wire configuration with a 20-gauge harness
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for proper vehicle connection
• Overall length: 15.87 in.; wiring harness length: 12.32 in.

Product Details

Walker Products Aftermarket 350-34086 is designed for upstream oxygen sensor service on 2000-2002 Honda Accord, 2001 Honda Odyssey, and 2002-2003 Honda Civic applications. As an upstream sensor, it helps the engine management system monitor exhaust oxygen content before the catalytic converter so the ECU can adjust air-fuel delivery. This part number is built for the specified fitment position and connector style, making it a direct replacement choice for Honda Civic, Honda Accord, and Honda Odyssey repairs where the original sensor has failed or is reporting a fault.

Walker Products has supplied engine management and oxygen/air-fuel sensors since 1946, and the Walker Products Aftermarket line focuses on application-specific replacement parts for modern diagnostic systems. Part number 350-34086 is intended for vehicles that require a threaded, heated upstream sensor with the listed connector and harness configuration.

Common Issues This Sensor Can Address

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

Installation Notes

Verify the connector shape, wire count, thread diameter, and upstream position before installation. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear, since damaged wiring can shorten sensor life and affect ECU feedback. Confirm the vehicle application by year, make, model, and position before replacing the original unit.

Quality Assurance

Walker Products manufactures engine management sensors as OE-replacement parts for specific applications and fitment positions. The company is ISO 9001 / TS 16949 certified, supporting consistent production and application-focused quality control for parts such as the 350-34086 oxygen sensor.