Walker 350-34308 Oxygen Sensor - Downstream

Overview of Walker Oxygen Sensor 350-34308 for Lexus IS300

The Walker Products Aftermarket oxygen sensor 350-34308 is designed specifically for the Lexus IS300. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated oxygen sensor type for faster response times
• Specific fit for Lexus IS300 models
• 33.98-inch wiring harness length for precise installation
• 20 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 37.52 inches for proper fitment

Detailed Product Description

This Walker oxygen sensor 350-34308 is engineered to meet the exact specifications required by the Lexus IS300. Featuring a heated sensor type, it provides quicker warm-up times compared to unheated sensors, improving fuel efficiency and reducing emissions sooner after engine start. The 4-wire design includes two wires for the heater circuit and two for the sensor signal, ensuring reliable operation and accurate data transmission to the vehicle’s engine control unit.

The wiring harness length of 33.98 inches allows for flexible routing during installation, while the 20 gauge wire ensures durability and resistance to heat and vibration. The radiused polygon male connector is designed for a secure and precise fit, minimizing the risk of connection issues. The sensor mounts via a threaded connection with an 18.0 mm diameter, matching OEM specifications for the Lexus IS300.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on providing replacement emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, offering a reliable and direct-fit solution for Lexus IS300 owners seeking to maintain proper emissions performance and engine efficiency.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Lexus IS300
• Helps resolve rough idling and poor fuel economy caused by sensor malfunction
• Reduces engine hesitation and improves throttle response
• Assists in passing emissions inspections by ensuring accurate exhaust gas readings
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate oxygen sensor socket for threaded removal and installation
• Do not over-tighten; torque to manufacturer specifications
• Check connector compatibility with the radiused polygon male plug
• Inspect wiring harness for damage before installation

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards, ensuring durability and reliable performance. While specific warranty details for part number 350-34308 should be confirmed at the point of purchase, Walker typically offers limited warranties covering defects in materials and workmanship.