Walker 350-341045 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Walker 350-341045 Oxygen Sensor Overview

Walker Products 350-341045 is a heated oxygen sensor built as a specific-fit OE replacement for select Ford and Lincoln applications. It is engineered to deliver the ECU feedback needed for downstream emissions monitoring, fuel control, and fault-code diagnosis.

For vehicles such as the Ford F-150, Ford Expedition, and Lincoln Navigator, this downstream oxygen sensor supports accurate exhaust monitoring when the original sensor has aged or failed.

Key Features

• Heated oxygen sensor for downstream emissions control
• Specific-fit design for the listed Ford and Lincoln applications
• 4-wire configuration with female connector
• Threaded mounting with 18.0 mm thread diameter
• 11.61 in. wiring harness length and 13.77 in. overall length
• Radiused polygon connector shape for application-specific fitment
• Walker Products Aftermarket engine management sensor line

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as OE-style replacements for worldwide vehicle coverage. Part number 350-341045 is manufactured for the specified application and position so the ECU receives the correct diagnostic feedback from the downstream sensor location. This matters on modern Ford and Lincoln platforms where the oxygen sensor helps monitor exhaust efficiency and supports proper engine management.

Use this Walker 350-341045 oxygen sensor when servicing downstream positions on select Ford F-150, Ford Expedition, Ford Transit Connect, Ford Mustang, Ford Super Duty, and Lincoln Navigator models. The part number 350-341045 is listed for downstream right, downstream left, and downstream applications depending on vehicle configuration.

What It Helps Address

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

Installation Notes and Fitment

Confirm the exact position before ordering, since fitment varies by bank and sensor location. Fits 2022-2023 Ford Transit Connect, downstream; Fits 2020-2022 Ford F-250 Super Duty, downstream right; Fits 2020-2022 Ford F-350 Super Duty, downstream right; Fits 2022 Ford Mustang, downstream; Fits 2022 Lincoln Navigator, downstream right; Fits 2018 Lincoln Navigator, downstream right; Fits 2018-2021 Ford Expedition, downstream right; Fits 2018-2021 Ford Expedition, downstream left; Fits 2019-2021 Ford F-150, downstream right; Fits 2019-2021 Ford F-150, downstream left; Fits 2018-2021 Ford Mustang, downstream; Fits 2021 Ford Transit Connect, downstream; Fits 2019-2021 Lincoln Navigator, downstream right; Fits 2019-2021 Lincoln Navigator, downstream left; Fits 2019-2020 Ford Transit Connect, downstream; Fits 2016-2019 Ford Transit-150, downstream left; Fits 2016-2019 Ford Transit-250, downstream left; Fits 2016-2019 Ford Transit-350, downstream left; Fits 2016-2019 Ford Transit-350 HD, downstream left; Fits 2018 Ford F-150, downstream right; Fits 2018 Ford F-150, downstream left; Fits 2017 Ford Transit-350 HD, downstream left.

Inspect the sensor, wiring harness, and connector for physical damage before installation. On vehicles with stored fault codes, clear codes only after the underlying issue has been corrected and the replacement sensor is installed.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and manufactures sensors under ISO 9001/TS 16949 quality systems. Part number 350-341045 is built for the specified fitment and position to support proper ECU feedback on the listed Ford and Lincoln vehicles.