Walker 350-64056 Oxygen Sensor

Walker 350-64056 Oxygen Sensor Overview

Walker Products 350-64056 is a heated oxygen sensor built as a specific-fit OE replacement for select Lexus, Toyota, Scion, and Pontiac applications. It is engineered to deliver the ECU feedback needed for accurate fuel control, emissions monitoring, and fault-code diagnosis.

For drivers servicing a Toyota Camry, Toyota Highlander, or Lexus RX350, this upstream sensor is matched to the listed application and mounting position for direct replacement service.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with male connector
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 17.64 in.
• Overall length: 21.18 in.
• Radiused polygon connector shape for application-specific fitment
• Walker Products Aftermarket line for engine management and emissions service

Detailed Description

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensor replacement parts built for application-specific fitment. Part number 350-64056 is designed to replace the original sensor on the listed upstream positions, helping the ECU monitor exhaust oxygen content and maintain proper air-fuel control. This matters on vehicles such as the Lexus RX350, Toyota Sienna, and Toyota RAV4, where the upstream sensor plays a direct role in emissions performance and drivability.

This part cross-references no listed aftermarket part numbers in the provided data. Fits 2016-2021 Lexus RX350, upstream rear; fits 2007-2011 Toyota Camry, upstream front; fits 2004-2008 Toyota RAV4, upstream.

What It Helps Address

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

Installation Notes and Tips

Confirm the exact year, make, model, and sensor position before ordering. This sensor is listed for upstream right, upstream rear, upstream front, upstream left, and upstream positions depending on application. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear before installation, since damaged wiring can shorten service life and trigger recurring fault codes.

Use the vehicle’s service information to verify bank and sensor location, especially on Lexus RX350, Toyota Camry, and Toyota Highlander applications where upstream placement varies by build and model year.

Quality Assurance

Walker Products has manufactured engine management components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The 350-64056 is built to the specified application and position so it can provide the diagnostic feedback expected by the ECU.