Walker 350-31031 Oxygen Sensor - Upstream

Overview of Walker 350-31031 Oxygen Sensor

The Walker 350-31031 oxygen sensor is designed for specific vehicle applications including Chevrolet and Toyota models such as the 4Runner, Corolla, and Supra. This non-heated sensor features a flange mount design and a radiused polygon female connector, ensuring precise fit and reliable emission control performance.

• Wiring harness length: 17.44 inches
• Wire gauge measurement: 20 gauge
• Sensor type: Non heated oxygen sensor
• Specific fit for select Chevrolet and Toyota models
• Connector shape: Radiused polygon with female gender
• Thread diameter: 18.0 mm
• Overall length: 20.98 inches
• Mounting type: Flange mount
• Single wire configuration

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-31031) is engineered to meet the emission control requirements of various Chevrolet and Toyota vehicles, including the Land Cruiser, MR2, and Pickup. The sensor’s non-heated design is suitable for applications where a heated sensor is not required, providing accurate oxygen level readings to the engine control unit. The 17.44-inch wiring harness and 20 gauge wire ensure proper electrical connectivity, while the radiused polygon female connector offers secure and precise attachment. The flange mount and 18.0 mm thread diameter facilitate straightforward installation and stable sensor positioning.

Common Applications and Issues Addressed

• Helps maintain optimal air-fuel mixture for efficient combustion
• Reduces harmful emissions by providing accurate oxygen level data
• Prevents engine performance issues related to faulty oxygen sensors
• Addresses check engine light triggers caused by sensor failure
• Improves fuel economy by ensuring proper sensor operation

Installation Notes and Tips

• Verify compatibility with your Chevrolet or Toyota model before installation
• Use appropriate tools to avoid damaging the 18.0 mm threaded sensor
• Ensure the flange mount is securely fastened to prevent exhaust leaks
• Handle the radiused polygon female connector carefully to maintain wiring integrity
• Follow vehicle manufacturer torque specifications during installation

Quality Assurance and Warranty

Walker Products Aftermarket parts are manufactured to meet industry standards for emission control sensors. The 350-31031 oxygen sensor undergoes rigorous quality checks to ensure durability and reliable performance. While specific warranty details may vary, Walker typically offers coverage against manufacturing defects to support long-term use in compatible Chevrolet and Toyota vehicles.