Walker 350-34631 Oxygen Sensor - Downstream or Upstream

Walker 350-34631 Oxygen Sensor Overview

Walker Products 350-34631 is a heated oxygen sensor built as a specific-fit OE replacement for select Honda applications. It is engineered to provide the ECU with the exhaust feedback needed for proper fuel control, emissions monitoring, and fault detection.

Compatible with Honda Accord, Insight, Odyssey, and Prelude applications in upstream and downstream positions, this sensor is a direct-fit option for drivers addressing oxygen sensor-related diagnostic trouble codes or drivability concerns.

Key Features

• Heated oxygen sensor design for faster operating temperature
• Specific-fit application for targeted Honda vehicle coverage
• 4-wire configuration with female connector
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon connector shape for OE-style connection
• 10.94 in. wiring harness length and 14.49 in. overall length
• Walker Products Aftermarket engine management sensor line

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE-style replacements for a wide range of vehicles. Part number 350-34631 is manufactured for the specified application and fitment position so the ECU receives the correct diagnostic feedback. This matters on Honda Accord, Honda Prelude, Honda Odyssey, and Honda Insight models where an aging sensor can affect fuel trim and emissions performance.

This part cross-references common oxygen sensor applications for the same vehicle coverage. Fits 1994-2002 Honda Accord, upstream; fits 2000-2001 Honda Insight, downstream; fits 1999-2001 Honda Odyssey, downstream; fits 1996 Honda Prelude, upstream; fits 1994-1995 Honda Prelude, upstream.

Common Issues It May Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Rough running or inconsistent engine operation
• Increased exhaust emissions
• Stored ECU fault codes tied to upstream or downstream sensor circuits

Installation Notes

Verify the sensor position before ordering, since this part is listed for both upstream and downstream locations depending on the vehicle. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation. Confirm thread size, connector style, and harness routing against the original sensor to ensure proper fitment on the Honda Accord, Prelude, Odyssey, or Insight application.

Quality Assurance

Walker Products is an automotive ISO 9001/TS 16949 certified company with a long history in engine management components. The 350-34631 oxygen sensor is built for the specified vehicle application and position to support accurate ECU feedback and OE-style replacement performance.