Walker 350-34419 Oxygen Sensor - Downstream or Upstream

Overview of Walker Oxygen Sensor for Mercedes-Benz S320

The Walker 350-34419 oxygen sensor is designed specifically for the Mercedes-Benz S320, 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.

• Wiring harness length: 14.29 inches
• Wire gauge measurement: 20 gauge
• Heated sensor type for faster response
• Specific fit for Mercedes-Benz S320
• Four-wire configuration
• Radiused polygon male connector shape
• Thread diameter: 18.0 mm
• Overall length: 17.83 inches
• Threaded mounting type

Detailed Product Description

The Walker 350-34419 oxygen sensor is engineered to meet the exact specifications of the Mercedes-Benz S320. As a heated sensor, it includes an internal heating element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The four-wire design supports both the sensor signal and the heater circuit, ensuring reliable performance. The radiused polygon male connector provides a secure and precise connection, minimizing the risk of electrical issues. With a wiring harness length of 14.29 inches and an overall length of 17.83 inches, this sensor fits seamlessly into the vehicle’s emission control system. The threaded mounting type with an 18.0 mm diameter ensures proper installation and durability.

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement parts that meet or exceed OEM standards. Walker Products Aftermarket components are designed to offer reliable performance and compatibility, making them suitable for professional repairs and maintenance.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for the Mercedes-Benz S320
• Reduces engine misfires and rough idling caused by faulty oxygen sensors
• Improves fuel economy by providing accurate oxygen level readings
• Prevents increased emissions and failed emissions tests
• Resolves check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use a proper oxygen sensor socket for removal and installation
• Apply anti-seize compound to the sensor threads if not pre-coated
• Verify connector compatibility with the radiused polygon male connector
• Check wiring harness length and routing to avoid damage or interference

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. The 350-34419 part number undergoes rigorous testing to ensure durability and accurate sensor readings. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship, providing confidence in the sensor’s reliability for Mercedes-Benz S320 applications.