Walker 350-34407 Oxygen Sensor - Downstream or Upstream

Overview of Walker 350-34407 Oxygen Sensor for Toyota Vehicles

The Walker 350-34407 oxygen sensor is designed specifically for select Toyota models including the 4Runner, Pickup, and Previa. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for Toyota 4Runner, Pickup, and Previa models
• 18.43-inch wiring harness length with 20 gauge wire
• Four-wire configuration with radiused polygon male connector
• Flange mount with 18.0 mm thread diameter for secure installation
• Overall length of 21.97 inches for proper fitment

Detailed Product Features and Specifications

This oxygen sensor from Walker Products Aftermarket is engineered with a heated sensor element to provide quicker warm-up and more accurate readings under various operating conditions. The four-wire design supports both the sensor signal and heater circuit, improving reliability and sensor lifespan. The wiring harness length of 18.43 inches and 20 gauge wire ensure proper electrical connectivity without excess slack or strain. The radiused polygon male connector is designed for a secure and precise connection to the vehicle’s wiring harness. The flange mount with an 18.0 mm thread diameter allows for straightforward installation in the exhaust system, maintaining a tight seal and proper sensor positioning.

Walker Products Aftermarket Brand Line

Walker Products Aftermarket offers a range of emission control components designed to meet or exceed OEM specifications. This oxygen sensor is part of their sensor lineup, providing reliable performance and compatibility with specific vehicle applications. The focus on exact fitment and quality materials supports emission compliance and engine efficiency for Toyota vehicles such as the 4Runner, Pickup, and Previa.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces harmful emissions by providing accurate exhaust gas data
• Prevents engine performance issues related to faulty oxygen sensors
• Addresses check engine light triggers related to sensor failure
• Supports smooth engine idling and acceleration response

Installation Notes and Tips

When installing the Walker 350-34407 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness or connector. Verify the radiused polygon male connector aligns correctly with the vehicle’s harness. Apply anti-seize compound on the threads if recommended by the vehicle manufacturer to facilitate future removal. Confirm the flange mount is securely tightened to prevent exhaust leaks.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details for part number 350-34407 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship. This ensures confidence in the sensor’s reliability for Toyota 4Runner, Pickup, and Previa applications.