Walker 350-34270 Oxygen Sensor - Upstream

Overview of Walker Oxygen Sensor for Mercedes-Benz E320

The Walker 350-34270 oxygen sensor is designed specifically for the Mercedes-Benz E320, 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 with 4-wire configuration
• Specific fit for Mercedes-Benz E320 models
• Threaded mounting with 18.0 mm thread diameter
• 21.97 inches wiring harness length and 25.51 inches overall length
• 20 gauge wire for reliable signal transmission
• Radiused polygon male connector for secure connection

Detailed Product Description

The Walker 350-34270 oxygen sensor is part of the Walker Products Aftermarket line, known for providing reliable emission control components tailored to specific vehicle applications. This sensor is a heated type, which allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor’s 4-wire design includes two wires for the heater circuit and two for the sensor signal, ensuring accurate oxygen level readings.

With a wiring harness length of 21.97 inches and an overall length of 25.51 inches, this sensor is engineered to fit precisely in the exhaust system of the Mercedes-Benz E320. The 18.0 mm threaded mounting type allows for straightforward installation, while the radiused polygon male connector ensures a secure and stable electrical connection. The 20 gauge wire measurement supports consistent signal integrity under various operating conditions.

Applications and Problem Resolution

• Maintains proper air-fuel mixture for efficient combustion
• Helps reduce harmful emissions by monitoring exhaust gases
• Prevents engine performance issues related to faulty oxygen sensors
• Addresses check engine light triggers caused by sensor failure
• Supports optimal fuel economy and engine responsiveness

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate tools for threaded sensor removal and installation
• Verify connector type matches the vehicle harness before installation
• Do not over-tighten the sensor to prevent thread damage
• Check for exhaust leaks after installation to ensure sensor accuracy

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet OEM specifications for fit, form, and function. The 350-34270 sensor is manufactured to provide consistent performance and durability in emission control systems. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability.