Walker 350-34063 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Walker 350-34063 Oxygen Sensor Overview

Walker Products 350-34063 is a heated oxygen sensor built as an OE-style replacement for specific Mercedes-Benz and Ram applications. It is engineered for the correct fitment position, connector style, and ECU feedback required by the vehicle’s emissions system.

For Mercedes-Benz AMG, G-Class, E-Class, C-Class, and Ram 3500 diesel applications, this downstream sensor helps restore accurate exhaust monitoring when the original unit is worn, contaminated, or damaged.

Key Features

• Heated oxygen sensor for downstream emissions monitoring
• Specific-fit design for the listed Mercedes-Benz and Ram applications
• 4-wire configuration with female connector
• Threaded mounting with 18.0 mm thread diameter
• 25.12 in. wiring harness length and 28.66 in. overall length
• Radiused polygon connector shape for application-specific fitment
• Walker Products Aftermarket line engineered for OE replacement use

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed for original-equipment replacement needs. Part number 350-34063 is built for specific vehicle applications and downstream positions, including downstream right, downstream left, and downstream configurations where listed. It is designed to provide the diagnostic feedback the ECU expects from the sensor circuit.

Compatible With Mercedes-Benz AMG GT 63, AMG GT 63 S, G550, G63 AMG, G63 4x4 Squared AMG, C43 AMG, E43 AMG, E63 AMG S, GLC43 AMG, GLC63 AMG, S560, S63 AMG, C180, C200, C250, SLK250, E400, E450, GLE550e, GLC63 AMG S, Maybach S560, C63 AMG S, and Ram 3500 downstream applications listed in the fitment data. Walker 350-34063 is a direct-fit option for buyers searching for a Mercedes-Benz downstream oxygen sensor or Ram 3500 downstream right sensor by part number.

What This Sensor Helps Address

• Check engine light related to downstream oxygen sensor faults
• Poor engine performance caused by inaccurate exhaust feedback
• Increased fuel consumption from incorrect sensor readings
• Higher exhaust emissions from a failing sensor circuit
• Damaged sensor wiring or connector issues affecting signal output

Installation Notes

Verify the exact position before ordering, since this part is listed for downstream right, downstream left, and downstream placements depending on the vehicle. Inspect the sensor, wiring harness, and connector for physical damage before installation. For Mercedes-Benz C43 AMG, GLC43 AMG, and E450 applications, confirm the correct downstream side and bank/sensor location against the vehicle’s service information. For Ram 3500 Cab & Chassis with Aisin transmission, follow the listed downstream right B2S2 application details.

Use the vehicle’s ECU fault codes and service data to confirm the failed sensor location. Threaded installation and the application-specific connector help support proper replacement on the listed models.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. Part number 350-34063 is manufactured for specific application fitment and diagnostic feedback requirements, supporting OE-style replacement needs for Mercedes-Benz and Ram emissions systems.