Walker 350-35058 Oxygen Sensor

Walker Oxygen Sensor 350-35058

Walker Products 350-35058 is a heated oxygen sensor built as an OE-style replacement for specific Mercedes-Benz and BMW applications. It is engineered for the correct fitment position and ECU feedback, helping maintain accurate air-fuel monitoring on the vehicles listed below.

Key Features

• Heated oxygen sensor for precise exhaust feedback
• Specific-fit design for the listed vehicle applications
• Threaded mounting type with 18.0 mm thread diameter
• 5-wire design with 20-gauge wiring
• Radiused polygon male connector for application-specific connection
• Wiring harness length: 38.9 in.; overall length: 42.44 in.
• Walker Products Aftermarket line for engine management and oxygen sensor replacement

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/fuel sensor replacement parts engineered for OE-style fit and function. Part number 350-35058 is made for specific upstream and downstream positions depending on the vehicle, including upstream right, upstream left, upstream rear, upstream, and downstream applications. This sensor is used on select Mercedes-Benz G550, G63 AMG, C63 AMG, and GLC63 AMG models, as well as BMW 328d, X3, 325i, 328i, 530i, 740i, X5, Z4, and related applications.

For BMW and Mercedes-Benz vehicles, accurate oxygen sensor feedback is critical for fuel control, emissions monitoring, and fault-code diagnosis. Walker 350-35058 is built to match the listed application and position so the ECU receives the correct signal from the exhaust stream.

What It Helps Address

• Check engine light or MIL illumination related to oxygen sensor faults
• Poor engine performance caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel readings
• Higher exhaust emissions from a failing heated oxygen sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes

• Confirm the exact year, make, model, and sensor position before ordering.
• Inspect the sensor wiring harness and connector for physical damage before installation.
• Verify the threaded mounting location and connector shape match the original part.
• Use the listed fitment notes for position-specific applications such as upstream right, upstream left, upstream rear, or downstream.
• Fits 2022-2024 Mercedes-Benz G550, upstream right; Fits 2014-2018 BMW 328d xDrive, downstream; Fits 2006-2013 BMW 325i, upstream.

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 350-35058 is manufactured for the specified application and position to support proper ECU feedback on the listed BMW and Mercedes-Benz vehicles.