Walker 350-64064 Oxygen Sensor

Walker 350-64064 Oxygen Sensor Overview

Walker Products 350-64064 is a heated oxygen sensor built as an OE-style replacement for specific Lexus and Toyota applications. It is engineered for the correct fitment position and ECU feedback, helping maintain accurate exhaust monitoring on vehicles such as the Lexus IS350 and Toyota 4Runner.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for application-specific replacement. The 350-64064 follows that approach with a threaded, specific-fit design for upstream locations where precise signal response matters.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for confirmed Lexus and Toyota applications
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector for vehicle-specific connection
• Threaded mounting with 18.0 mm thread diameter
• Overall length: 11.93 in.; wiring harness length: 8.39 in.
• Walker Products part number 350-64064

Detailed Description

This Walker oxygen sensor is designed for upstream exhaust monitoring on a wide range of Lexus and Toyota models, including Lexus LC500, ES350, IS300, IS350, RC300, RC350, and Toyota 4Runner, Camry, Avalon, Tundra, and Land Cruiser applications. It is built to provide the diagnostic feedback the ECU expects from the original sensor location, making it a direct replacement choice for emissions and fuel-control service.

Walker Products Aftermarket has supplied engine management components since 1946, and this sensor reflects that OE-replacement focus with application-specific fitment and connector design. Part number 350-64064 is intended for upstream positions listed in the fitment data, including left, right, front, and general upstream locations depending on the vehicle.

This part cross-references Denso 234-9005 for the same application.

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 inaccurate exhaust readings
• Elevated exhaust emissions from a failing upstream sensor
• Fault codes stored in the ECU for sensor circuit or response issues

Installation Notes and Tips

Verify the exact year, model, engine configuration, and sensor position before ordering. This sensor is specific fit and must match the listed upstream left, upstream right, upstream front, or upstream position for the vehicle.

Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation. If the original sensor failed due to wiring or connector damage, repair those issues first so the replacement sensor can operate correctly.

Use the threaded mounting point and connector style shown in the specifications to confirm fitment on Lexus and Toyota exhaust systems.

Quality Assurance

Walker Products is an Automotive ISO 9001 / TS 16949 certified company focused on OE-style replacement sensors and engine management components. The 350-64064 is manufactured for the specified application and position to support proper ECU feedback on the listed vehicles.