Walker 350-34696 Oxygen Sensor - Downstream Left or Downstream Right

Walker Oxygen Sensor for Mercedes-Benz

Walker Products 350-34696 is a heated oxygen sensor built as a specific-fit OE replacement for select Mercedes-Benz applications. It is engineered for downstream placement and provides the ECU with the exhaust feedback needed for proper fuel control and emissions monitoring.

Key Features

• Specific-fit oxygen sensor for targeted Mercedes-Benz applications
• Heated sensor design for faster operating readiness
• 4-wire configuration with female connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 32.99 in.; overall length: 36.54 in.
• Radiused polygon connector shape for application-specific fitment
• Walker Products Aftermarket line for engine management and oxygen/air-fuel sensors

Detailed Description

Walker Products 350-34696 is part of the Walker Products Aftermarket engine management sensor line, developed as an OE-style replacement for vehicles that require precise sensor placement and diagnostic feedback. This heated oxygen sensor is designed for downstream use and is built to match the fitment position, connector style, and wiring layout required by the vehicle ECU. It is a direct replacement choice for Mercedes-Benz models including G550, G63 AMG, C63 AMG, C63 AMG S, GLC63 AMG, and GLC63 AMG S in the listed downstream positions. This part number, 350-34696, is intended for applications where accurate exhaust monitoring is needed to maintain proper engine management.

Walker Products has supplied engine management and fuel system components since 1946 and manufactures sensors for specific applications rather than universal use. This helps ensure the sensor matches the required downstream location on the vehicle, including Mercedes-Benz G550 downstream right, Mercedes-Benz G63 AMG downstream left, and Mercedes-Benz C63 AMG downstream configurations shown in the fitment data.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel monitoring
• Higher exhaust emissions from a failing downstream sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Verify the vehicle’s downstream sensor position before ordering, since fitment varies by model and side. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation. Confirm the threaded mounting location and connector style match the original sensor on the vehicle. This part cross-references Bosch (e.g., 17098) for the same application.

Quality Assurance

Walker Products manufactures engine management sensors under Automotive ISO9001/TS 16949 quality systems. The 350-34696 oxygen sensor is built for application-specific fitment and ECU feedback requirements on the listed Mercedes-Benz models.