Walker 350-34141 Oxygen Sensor - Downstream Left or Downstream Right

Overview of Walker 350-34141 Oxygen Sensor for Lexus Models

The Walker 350-34141 oxygen sensor is designed specifically for select Lexus vehicles, including the GS350, GS430, GS450h, IS250, IS350, and IS F. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance by providing precise air-fuel mixture data.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Lexus GS and IS series models
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Wiring harness length of 19.21 inches and overall length of 22.76 inches
• Wire gauge measurement of 20 for reliable signal transmission

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement emission control components engineered to meet or exceed OEM specifications. The line emphasizes precise fitment and durability, making the 350-34141 sensor a reliable choice for maintaining factory-level emissions performance in Lexus vehicles.

Product Features and Specifications

The Walker 350-34141 oxygen sensor features a heated sensor type that allows for faster warm-up times and improved accuracy in emissions readings. It includes a 4-wire design with a radiused polygon male connector, ensuring a secure and proper electrical connection. The sensor mounts via a threaded fitting with an 18.0 mm diameter, compatible with the exhaust system of the specified Lexus models. The wiring harness length of 19.21 inches and overall length of 22.76 inches provide adequate reach for installation without modification.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for Lexus GS350, GS430, GS450h, IS250, IS350, and IS F
• Helps resolve engine performance issues related to faulty oxygen sensors
• Reduces emissions by ensuring proper air-fuel mixture readings
• Prevents check engine light triggers caused by sensor failure
• Improves fuel efficiency by maintaining correct sensor feedback

Installation Notes and Tips

Installation of the Walker 350-34141 oxygen sensor requires removal of the old sensor from the exhaust manifold or pipe. The threaded mounting type with an 18.0 mm diameter allows for straightforward replacement using standard oxygen sensor sockets. Ensure the radiused polygon male connector is properly aligned and securely connected to the vehicle’s wiring harness. Verify wire gauge and harness length compatibility before installation to avoid electrical issues.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. The 350-34141 sensor undergoes rigorous testing to comply with emissions control requirements. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship. Consult product documentation or the manufacturer for exact warranty terms.