Walker 350-34503 Oxygen Sensor - Downstream Left

Overview of Walker 350-34503 Oxygen Sensor for Lexus Models

The Walker 350-34503 oxygen sensor is designed specifically for select Lexus vehicles, including the GS300, IS300, IS350, RC300, and RC350. 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 Lexus GS300, IS300, IS350, RC300, and RC350
• 42.05-inch wiring harness length for flexible installation
• 22 gauge wire measurement with 4 wires for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 45.59 inches for proper fitment

Detailed Product Description

This Walker oxygen sensor, part number 350-34503, is engineered to meet the specific requirements of various Lexus models. Featuring a heated sensor element, it provides quicker warm-up times compared to non-heated sensors, which helps reduce emissions during cold starts. The sensor includes a 42.05-inch wiring harness with 22 gauge wires and four conductors, ensuring consistent and accurate data transmission to the vehicle’s engine control unit (ECU). The radiused polygon male connector is designed for a secure and precise fit, minimizing the risk of connection issues. Its threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system.

Walker Products Aftermarket Line

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. The product line emphasizes quality construction and compatibility, ensuring that the 350-34503 sensor integrates seamlessly with the Lexus GS300, IS300, IS350, RC300, and RC350 models.

Common Applications and Issues Addressed

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

Installation Notes and Tips

When installing the Walker 350-34503 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector shape and gender match the vehicle’s harness for a secure connection. Thread the sensor carefully to prevent cross-threading and tighten to manufacturer torque specifications. It is recommended to inspect the exhaust system for leaks or damage during installation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-34503 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship. This ensures dependable performance and peace of mind when replacing oxygen sensors on Lexus GS300, IS300, IS350, RC300, and RC350 vehicles.