Walker 350-34461 Oxygen Sensor - Downstream Right

Walker 350-34461 Oxygen Sensor for Mercedes-Benz

Walker Products 350-34461 is a heated oxygen sensor built as a specific-fit OE replacement for select Mercedes-Benz applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance on the affected vehicle.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for application-specific fitment. The 350-34461 follows that approach with a threaded, heated design and vehicle-specific connector configuration for direct replacement use on the listed Mercedes-Benz models.

Key Features

• Heated oxygen sensor for ECU feedback and emissions monitoring
• Specific fit design for the listed Mercedes-Benz applications
• Threaded mounting type with 18.0 mm thread diameter
• 4-wire sensor with 22-gauge wiring
• Radiused polygon male connector for proper vehicle-side connection
• Wiring harness length: 20.79 in.; overall length: 24.33 in.

Detailed Description

The Walker 350-34461 oxygen sensor is designed for downstream right placement on 2001-2003 Mercedes-Benz CLK320, 2001-2003 Mercedes-Benz CLK430, and 2001-2002 Mercedes-Benz CLK55 AMG. As a heated sensor, it supports faster operating response and consistent signal output for the engine control unit. For Mercedes-Benz CLK320 downstream right oxygen sensor replacement, Mercedes-Benz CLK430 downstream right oxygen sensor replacement, or Mercedes-Benz CLK55 AMG downstream right oxygen sensor replacement, this part number provides the application-specific fitment needed for service work.

Walker Products has supplied engine management components since 1946 and manufactures sensors for specific vehicle applications. Part number 350-34461 is built to match the required position and connector style for the listed vehicles, making it a practical choice when replacing a failed downstream oxygen sensor on these Mercedes-Benz models. This part cross-references Bosch 15717 and Denso 234-9005 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Elevated exhaust emissions from a failing downstream sensor
• Rough engine operation tied to inaccurate ECU input
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes and Tips

Verify the downstream right position before installation and compare the connector shape, wire count, and thread size to the original sensor. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten service life and affect signal quality. Confirm the vehicle’s fault codes and related exhaust system condition before replacing the sensor.

Quality Assurance

Walker Products manufactures engine management sensors as OE-style replacement parts for specific applications and supports them with ISO 9001/TS 16949 quality systems. The 350-34461 is built to provide the diagnostic feedback required by the ECU on the listed Mercedes-Benz vehicles.