Walker 350-64074 Oxygen Sensor - Upstream Rear

Walker 350-64074 Oxygen Sensor for Toyota RAV4

Walker Products 350-64074 is a heated oxygen sensor built as a specific-fit OE-style replacement for select Toyota applications. It is engineered to provide the ECU with the correct feedback for air-fuel control, helping maintain proper engine management on the 2001-2003 Toyota RAV4, upstream rear exhaust position.

Key Features

• Heated oxygen sensor for faster operating response
• Specific fitment for the upstream rear exhaust location
• 4-wire design with 20-gauge wiring
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for application-specific connection
• Wiring harness length: 9.37 in.; overall length: 12.91 in.

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered as replacement parts for original equipment applications. Part number 350-64074 is built for the 2001-2003 Toyota RAV4 and is positioned for the upstream rear exhaust system, where accurate sensor feedback is used by the ECU to manage fuel delivery and emissions control. If the original sensor is aging or damaged, the vehicle may store fault codes and show drivability or emissions-related symptoms. This part cross-references no listed alternate part numbers in the provided data.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rough running caused by incorrect air-fuel feedback
• Higher fuel consumption from inaccurate exhaust readings
• Increased exhaust emissions from a failing sensor
• Fault codes stored in the ECU for sensor or related system issues

Installation Notes

Before replacement, inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear. Confirm the threaded mounting location and connector style match the original unit on your Toyota RAV4. For best results, verify the upstream rear exhaust position and compare the old sensor’s wire routing, connector shape, and thread size before installation.

Quality Assurance

Walker Products has manufactured engine management components since 1946 and operates under Automotive ISO9001/TS 16949 certification. The 350-64074 is produced as a specific-application replacement to deliver the diagnostic feedback expected by the ECU on the listed Toyota RAV4 fitment.