Walker 350-34085 Oxygen Sensor - Downstream

Walker Oxygen Sensor for Mercedes-Benz Downstream Fitment

Walker Products 350-34085 is a heated oxygen sensor built for specific downstream applications on select Mercedes-Benz models. It is engineered as an OE-style replacement to deliver the diagnostic feedback the ECU expects, helping maintain proper engine management on vehicles that rely on accurate exhaust monitoring.

Key Features

• Heated oxygen sensor for downstream placement
• Specific fitment for select Mercedes-Benz C-Class and AMG applications
• 4-wire design with female connector
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon connector shape for application-specific connection
• Wiring harness length: 22.76 in; overall length: 26.3 in
• Walker Products Aftermarket line for engine management and oxygen/air-fuel sensor replacement

Detailed Description

Walker Products 350-34085 is a specific-fit downstream oxygen sensor for 1995-1996 Mercedes-Benz C220, 1995-1996 Mercedes-Benz C280, and 1995-1996 Mercedes-Benz C36 AMG applications. It is designed for bank 1 sensor 2 use where listed, and for 1996 C280 and C36 AMG models it applies to vehicles up to chassis/VIN 436535. The heated sensor design supports ECU feedback on vehicles that monitor exhaust oxygen content for fuel control and emissions management.

The Walker Products Aftermarket line focuses on engine management and oxygen/air-fuel sensors developed as OE replacement parts for a wide range of vehicles. Part number 350-34085 is built for the specified position and connector style, making it a direct-match option for Mercedes-Benz C220 downstream oxygen sensor replacement and related Mercedes-Benz C280 and C36 AMG downstream sensor service.

What It Helps Address

• Check engine light related to downstream oxygen sensor faults
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough engine operation from incorrect air-fuel correction
• Elevated exhaust emissions from a degraded sensor signal
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Confirm the vehicle year, model, downstream position, and VIN break before ordering. For 1996 Mercedes-Benz C280 and C36 AMG applications, verify chassis/VIN 436535 or earlier as listed. Inspect the sensor wiring harness and connector for damage before installation, since damaged wiring can shorten sensor life and affect signal quality. Use the threaded mounting location and connector style specified for the vehicle application.

Quality Assurance

Walker Products has produced engine management and fuel system components since 1946 and operates as an Automotive ISO 9001/TS 16949 certified company. This part cross-references Bosch (e.g., 13275) for the same application.