Walker 350-341057 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Walker 350-341057 Oxygen Sensor for Porsche

Walker Products 350-341057 is a heated oxygen sensor built as a specific-fit OE replacement for select Porsche applications. It is engineered to provide the ECU with the correct diagnostic feedback for downstream monitoring, helping maintain proper engine management on covered vehicles.

Key Features

• Specific-fit heated oxygen sensor for targeted Porsche applications
• Downstream placement for the listed vehicle positions
• 4-wire design with female connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 15.55 in.; overall length: 19.68 in.
• Walker Products Aftermarket part number 350-341057

Product Details

Walker Products Engine Management and Oxygen/Air-Fuel sensors are developed as OE-style replacements for many vehicles worldwide, with each part number matched to a specific application and installation position. This Walker 350-341057 oxygen sensor is designed for downstream use on Porsche 718 Boxster, 718 Cayman, 911, and Macan applications listed below, including downstream left and downstream right positions where specified. The heated sensor design supports accurate feedback to the ECU, which is important when diagnosing fault codes, drivability concerns, increased fuel use, or elevated exhaust emissions. Walker Products Aftermarket focuses on application-specific fitment, making this part a direct replacement choice for covered Porsche models.

This part cross-references no listed alternate part numbers in the provided data.

Vehicle Fitment

• Fits 2019-2020 Porsche 718 Boxster, downstream.
• Fits 2017-2018 Porsche 718 Boxster, downstream.
• Fits 2019-2020 Porsche 718 Cayman, downstream.
• Fits 2018 Porsche 718 Cayman, downstream.
• Fits 2017 Porsche 718 Cayman, downstream right.
• Fits 2017 Porsche 718 Cayman, downstream left.
• Fits 2019 Porsche 911, downstream right.
• Fits 2017-2018 Porsche 911, downstream right.
• Fits 2017-2018 Porsche 911, downstream left.
• Fits 2015-2018 Porsche Macan, downstream left.

Installation Notes

Confirm the sensor position before installation, since this part is listed for downstream, downstream left, and downstream right applications. Inspect the wiring harness, connector, and surrounding exhaust components for damage before replacement. Verify the threaded mounting location and connector style match the original sensor on the vehicle.

Quality Assurance

Walker Products states that its engine management and oxygen sensor lines are developed under automotive ISO 9001/TS 16949 quality systems. Since 1946, Walker Products has supplied engine management sensors and fuel system components for vehicle applications worldwide.