Walker 350-34697 Oxygen Sensor - Downstream Rear

Overview of Walker Oxygen Sensor 350-34697

The Walker 350-34697 oxygen sensor is designed specifically for select Lexus and Toyota models, including the Highlander, RX330, and RX350. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Lexus Highlander, Toyota RX330, and RX350
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon female connector for secure electrical connection
• Wiring harness length of 23.15 inches and overall length of 26.69 inches
• Wire gauge measurement of 20 for reliable signal transmission

Walker Products Aftermarket Line Details

The Walker Products Aftermarket line focuses on providing replacement emission control components that meet or exceed OEM specifications. This oxygen sensor from Walker Products Aftermarket is engineered to deliver consistent performance and durability, making it a suitable replacement part for maintaining factory-level emissions standards in compatible Lexus and Toyota vehicles.

Product Features and Specifications

This oxygen sensor features a heated sensor type that allows for faster warm-up times and improved accuracy in measuring exhaust gases. The 4-wire design supports both the sensor signal and heater circuit, ensuring stable operation under various driving conditions. The radiused polygon female connector provides a secure and precise fit, reducing the risk of electrical issues. With a threaded mounting type and an 18.0 mm thread diameter, installation aligns with factory specifications for the listed vehicle models.

Common Applications and Problem Resolution

• Helps correct engine misfires caused by faulty oxygen sensor readings
• Reduces increased emissions due to sensor failure
• Improves fuel efficiency by providing accurate air-fuel ratio data
• Prevents check engine light triggers related to oxygen sensor faults
• Supports proper catalytic converter function by maintaining correct exhaust gas monitoring

Installation Notes and Tips

When installing the Walker 350-34697 oxygen sensor, ensure the vehicle is cool to avoid burns. Use an oxygen sensor socket or appropriate tool to remove the old sensor carefully. Verify the connector type matches the vehicle harness before installation. Thread the sensor by hand initially to avoid cross-threading, then tighten to manufacturer torque specifications. Confirm all electrical connections are secure to prevent signal interruptions.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-34697 should be confirmed at the point of purchase, Walker typically offers limited warranties covering defects in materials and workmanship. This ensures reliability and peace of mind when replacing oxygen sensors on Lexus Highlander, Toyota RX330, and RX350 models.