Walker 350-64031 Oxygen Sensor

Walker 350-64031 Oxygen Sensor for Subaru and Toyota

Walker Products 350-64031 is a heated, specific-fit oxygen sensor engineered as an OE-style replacement for a wide range of Subaru, Toyota, Lexus, and Scion applications. It is built for upstream positions where accurate exhaust feedback is critical to engine management and emissions control.

Key Features

• Heated oxygen sensor with specific fitment for the listed applications
• 4-wire design with a 20-gauge harness
• 14.29 in. wiring harness length and 17.83 in. overall length
• 18.0 mm thread diameter with threaded mounting
• Radiused polygon male connector for direct vehicle-side connection
• Designed to provide ECU feedback for upstream exhaust monitoring

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors built for direct replacement use. Part number 350-64031 is manufactured for the specified application and position, helping maintain the diagnostic signal the ECU expects from the upstream sensor. This part is listed for many 2011-2024 Subaru and Toyota platforms, including Subaru Crosstrek, Forester, Impreza, BRZ, Legacy, Outback, XV Crosstrek, and Toyota Camry, RAV4, Avalon, Tacoma, Highlander, Sienna, Venza, Hilux, and 86, plus select Lexus and Scion models.

This part cross-references common OE-style replacement needs for the same application, including Walker Products Aftermarket references used across the listed fitments.

What It Helps Address

• Check engine light related to upstream oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Rough running or drivability issues tied to sensor signal loss
• Elevated exhaust emissions from inaccurate air-fuel correction
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes and Tips

Verify the exact year, make, model, and sensor position before ordering. This sensor is listed for upstream locations, including upstream front, upstream rear, and upstream right applications depending on vehicle configuration. Inspect the wiring harness and connector for heat damage, abrasion, or corrosion before installation, and confirm the threaded mounting point and connector shape match the original sensor.

Quality Assurance

Walker Products has supplied engine management components since 1946 and operates as an ISO 9001/TS 16949 certified manufacturer. The 350-64031 is built as a direct replacement sensor for the specified fitments and application-specific ECU feedback requirements.