Walker 350-34895 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Walker 350-34895 Oxygen Sensor Overview

Walker Products 350-34895 is a heated oxygen sensor built as a specific-fit OE replacement for select Mercedes-Benz and INFINITI applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions monitoring.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for exact application fitment. The 350-34895 follows that approach with a threaded mounting design, 4-wire configuration, and a radiused polygon female connector for the listed downstream and upstream positions.

Key Features

• Heated oxygen sensor for ECU feedback and emissions monitoring
• Specific-fit design for the listed vehicle applications
• 4-wire sensor with 20-gauge wiring
• 17.32 in. wiring harness length and 19.68 in. overall length
• 18.0 mm thread diameter with threaded mounting type
• Radiused polygon female connector for application-specific connection
• Walker Products part number 350-34895

Detailed Description

The Walker 350-34895 oxygen sensor is designed for vehicles that rely on accurate exhaust-gas feedback to manage air-fuel ratio and emissions performance. As a heated sensor, it reaches operating temperature quickly and supports consistent signal output for the ECU. This makes it a direct replacement choice for drivers addressing sensor-related fault codes, poor fuel economy, elevated emissions, or a malfunction indicator light.

Compatible With select Mercedes-Benz and INFINITI models, including 2022-2024 Mercedes-Benz Maybach S680 downstream left, 2023 Mercedes-Benz GLC300 downstream, 2019-2021 Mercedes-Benz Sprinter 1500 downstream, 2019-2021 Mercedes-Benz Sprinter 2500 downstream, 2015-2018 Mercedes-Benz C300 downstream, and 2016-2019 INFINITI Q50 downstream. Additional coverage includes Mercedes-Benz C200, GLC350e, SLC300, E300, GLC300, C350e, SLK300, SL65 AMG, and INFINITI Q60 applications in the listed upstream or downstream positions. This part number, 350-34895, is built for the specified fitment positions rather than universal use.

Walker Products has supplied engine management and oxygen sensor components since 1946, with ISO 9001/TS 16949 certified manufacturing processes supporting application-specific replacement parts.

What It Helps Address

• Check engine light triggered by oxygen sensor faults
• Poor fuel economy caused by inaccurate exhaust feedback
• Rough running or drivability issues tied to sensor signal loss
• Elevated exhaust emissions from a failing upstream or downstream sensor
• Stored ECU fault codes related to the affected sensor circuit

Installation Notes and Tips

• Verify the exact year, make, model, and sensor position before ordering.
• Confirm whether your vehicle uses upstream, downstream, downstream left, or downstream right placement.
• Inspect the wiring harness and connector for heat damage, corrosion, or physical wear before installation.
• Check for exhaust leaks or related engine management faults that could affect sensor readings.
• Use the listed threaded mounting and connector style to confirm proper fitment on the vehicle.

Quality Assurance

Walker Products manufactures this oxygen sensor as an OE-style replacement for the specified applications and backs its engine management components with ISO 9001/TS 16949 certified production standards. This part cross-references Bosch (e.g., 17098) for the same application.