Walker 350-64039 Oxygen Sensor - Upstream

Walker 350-64039 Oxygen Sensor for Honda Accord

Walker Products 350-64039 is a specific-fit heated oxygen sensor engineered for OE-style replacement on select Honda Accord applications. It is built for upstream placement and provides the ECU with the feedback needed to monitor air-fuel control and emissions performance.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fit for the listed Honda Accord upstream application
• 4-wire design with female connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 11.34 in.
• Overall length: 14.88 in.
• Walker Products Aftermarket line for engine management and oxygen sensor replacement

Product Details

Walker Products 350-64039 is an OE-style oxygen sensor made for 1998-2000 Honda Accord upstream locations, including Bank 1 Sensor 1 applications. It is also listed for front oxygen sensor use on various vehicle configurations within the same model range. The heated design helps the sensor reach operating temperature more quickly, supporting accurate exhaust feedback to the engine control unit. This part number is built for the specified application and fitment position, making it a direct replacement choice for Honda Accord oxygen sensor service.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed for specific vehicle applications. The brand line is centered on replacement parts that match the required fitment position and diagnostic feedback expected by the ECU.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect air-fuel feedback
• Rough engine operation from a failing upstream sensor
• Elevated exhaust emissions from inaccurate exhaust monitoring
• Fault codes stored in the ECU for sensor-related issues

Installation Notes

Before installation, inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear. Confirm the upstream mounting location and thread size match the vehicle application before removal. For 1998-2000 Honda Accord service, verify Bank 1 Sensor 1 placement and compare the existing connector shape and wire count to the replacement part. This part number is 350-64039.

Quality Assurance

Walker Products states that its engine management sensors are developed as OE replacement parts and manufactured for specific applications and fitment positions. The company also notes ISO 9001/TS 16949 certification and long-standing experience in engine management and fuel system components. Part number 350-64039 reflects that application-specific approach for Honda Accord oxygen sensor replacement.