Walker 350-34417 Oxygen Sensor - Downstream Left

Overview of Walker Oxygen Sensor 350-34417 for Lexus IS250 and IS350

The Walker 350-34417 oxygen sensor is designed specifically for Lexus IS250 and IS350 models, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

• Heated oxygen sensor for accurate emissions monitoring
• Specific fit for Lexus IS250 and IS350 models
• Threaded mounting with 18.0 mm thread diameter
• 40.87 inches wiring harness length with 4 wires of 20 gauge
• Radiused polygon male connector for reliable connection
• Overall length of 44.41 inches for proper fitment

Detailed Product Features and Specifications

This Walker Products Aftermarket oxygen sensor (part number 350-34417) is engineered with a heated sensor element to provide faster response times and improved fuel efficiency. The sensor includes a 40.87-inch wiring harness with four 20-gauge wires, allowing for stable electrical signals and compatibility with the vehicle’s engine control unit. The radiused polygon male connector ensures a secure and precise connection, reducing the risk of electrical faults. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system of Lexus IS250 and IS350 vehicles.

Walker Products Aftermarket Line Information

The Walker Products Aftermarket line focuses on delivering reliable emission control components that meet or exceed OEM specifications. This oxygen sensor is part of that line, providing a direct replacement solution tailored for specific vehicle applications like the Lexus IS250 and IS350. The product line emphasizes durability and precise fitment to maintain vehicle emission standards and engine performance.

Common Applications and Issues Addressed

• Restores accurate oxygen level readings for proper air-fuel mixture
• Helps resolve check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring correct sensor feedback
• Reduces harmful emissions by maintaining proper combustion control
• Prevents engine performance issues caused by faulty sensor signals

Installation Notes and Tips

When installing the Walker 350-34417 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the connector’s radiused polygon shape matches the vehicle harness for a secure fit. Avoid twisting or pulling on the wiring harness during installation to maintain wire integrity. It is recommended to check for any exhaust leaks after installation to ensure sensor accuracy.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards for emission control components. While specific warranty details for part number 350-34417 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability in Lexus IS250 and IS350 applications.