Walker 350-34402 Oxygen Sensor

Reliable Oxygen Sensor for Lexus and Toyota Vehicles

The Walker 350-34402 oxygen sensor is designed specifically for select Lexus and Toyota models, including the 4Runner, Land Cruiser, LX470, Pickup, Sequoia, T100, Tacoma, and Tundra. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance.

• Heated sensor type for faster warm-up and improved efficiency
• Specific fit for Lexus and Toyota models listed
• 13.7-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 17.24 inches for proper fitment

Walker Products Aftermarket Line Overview

Walker Products Aftermarket offers a comprehensive range of emission control components designed to meet or exceed OEM specifications. The 350-34402 oxygen sensor is part of this line, providing reliable performance and compatibility with specific Lexus and Toyota vehicles. This product line focuses on delivering precise sensor technology to maintain emission standards and engine efficiency.

Detailed Product Description

This Walker oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving fuel management and reducing emissions. The sensor’s four-wire setup includes a radiused polygon male connector, ensuring a secure and accurate electrical connection. With a flange mount and an 18.0 mm thread diameter, installation is straightforward and stable. The 13.7-inch wiring harness and overall length of 17.24 inches are tailored to fit the exhaust system layout of compatible Lexus and Toyota models, including the 4Runner, Land Cruiser, LX470, Pickup, Sequoia, T100, Tacoma, and Tundra.

Common Applications and Issues Addressed

• Helps resolve engine performance problems related to incorrect air-fuel mixture
• Reduces emissions by providing accurate oxygen level readings
• Prevents check engine light triggers caused by faulty sensors
• Improves fuel economy by enabling precise fuel injection adjustments
• Supports compliance with emission regulations for Lexus and Toyota vehicles

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Use the correct tools to remove the old sensor and install the Walker 350-34402 sensor securely by threading it into the flange mount. Verify the connector matches the radiused polygon male type for proper connection. After installation, clear any diagnostic trouble codes and perform a test drive to confirm sensor operation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards. The 350-34402 part number undergoes rigorous testing to ensure durability and accurate performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability.