Walker 350-34338 Oxygen Sensor - Downstream Right

Overview of Walker 350-34338 Oxygen Sensor for Mercedes-Benz

The Walker 350-34338 oxygen sensor is designed specifically for select Mercedes-Benz models including the C43 AMG, C280, CLK320, and CLK430. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine management system.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Mercedes-Benz C43 AMG, C280, CLK320, and CLK430
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure electrical connection
• Wiring harness length of 21.57 inches and overall length of 25.12 inches
• Wire gauge measurement of 20 for reliable signal transmission

Detailed Product Features and Specifications

This Walker oxygen sensor (part number 350-34338) is a heated sensor, which means it includes an internal heating element to bring the sensor up to operating temperature quickly. This feature improves sensor response time and accuracy, especially during cold starts. The sensor has a 4-wire design, which supports both the sensor signal and the heater circuit. The connector is a radiused polygon shape with a male gender, ensuring a precise and secure fit with the vehicle’s wiring harness.

The threaded mounting type with an 18.0 mm diameter allows for straightforward installation into the exhaust system. The wiring harness length of 21.57 inches and overall length of 25.12 inches provide sufficient reach for proper placement without excess slack. The wire gauge of 20 ensures durability and consistent electrical performance.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on providing reliable emission control components that meet or exceed OEM specifications. This oxygen sensor is part of that line, offering a direct replacement solution engineered for specific vehicle applications. Using a Walker Products Aftermarket sensor helps maintain proper emissions function and engine efficiency for your Mercedes-Benz.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for engine control
• Helps resolve rough idling or engine hesitation caused by faulty sensors
• Reduces emissions by ensuring proper catalytic converter operation
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel economy by maintaining optimal combustion

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate oxygen sensor socket or wrench for threaded installation
• Verify connector type matches the vehicle harness before installation
• Do not over-tighten the sensor; follow torque specifications for 18.0 mm thread
• Inspect wiring harness for damage and secure connections after installation

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps ensure compliance with emissions regulations and supports long-term vehicle reliability.