Walker 350-34269 Oxygen Sensor - Downstream Left, Downstream Rear or Downstream Right

Reliable Oxygen Sensor for Lexus and Toyota Vehicles

The Walker 350-34269 oxygen sensor is designed specifically for select Lexus and Toyota models, including the 4Runner, Avalon, Camry, ES350, Sequoia, Tacoma, and Tundra. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance.

• Heated sensor type for faster response times
• Specific fit for Lexus and Toyota models listed
• 11.34-inch wiring harness length for precise installation
• 22 gauge wire with 4-wire configuration
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 14.88 inches for proper fitment

Walker Products Aftermarket Line Overview

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing reliable emission control components tailored to specific vehicle applications. The line emphasizes precise fitment and quality construction to meet or exceed OEM standards, ensuring compatibility and durability for emission sensors like the 350-34269.

Detailed Oxygen Sensor Description

The Walker 350-34269 oxygen sensor features a heated design that allows the sensor to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its 4-wire configuration includes a heater circuit and signal wires, enhancing sensor responsiveness. The radiused polygon male connector ensures a secure and corrosion-resistant connection, while the threaded mounting type with an 18.0 mm diameter provides a stable and leak-free installation. The wiring harness length of 11.34 inches and overall length of 14.88 inches are engineered for precise fitment in the specified Lexus and Toyota models.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces engine misfires and rough idling
• Prevents increased emissions and failed emissions tests
• Addresses check engine light triggers related to oxygen sensor faults
• Improves fuel economy by providing accurate sensor data

Installation Notes and Tips

When installing the Walker 350-34269 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Confirm the connector matches the radiused polygon male design for a proper fit. Follow torque specifications to prevent sensor damage or exhaust leaks. It is recommended to inspect wiring and connectors for corrosion or damage before installation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards, ensuring reliable performance and durability. The 350-34269 part number undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the product documentation or supplier.