Walker 350-34649 Oxygen Sensor - Downstream, Downstream Left or Downstream Right

Walker Oxygen Sensor for Porsche Downstream Applications

Walker Products 350-34649 is a heated oxygen sensor built as a specific-fit OE-style replacement for select Porsche downstream positions. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance on affected Porsche Cayenne, Boxster, Cayman, and 911 applications.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for precise application fitment. Part number 350-34649 follows the required mounting position and connector configuration for the listed vehicles, making it a direct replacement choice for downstream sensor service.

Key Features

• Heated oxygen sensor for downstream use
• Specific-fit design for the listed Porsche applications
• 4-wire configuration with female connector
• Threaded mounting type with 18.0 mm thread diameter
• Wiring harness length: 28.07 in.
• Overall length: 31.61 in.
• Radiused polygon connector shape
• Walker Products part number 350-34649

Detailed Description

This Walker oxygen sensor is designed for downstream monitoring on select Porsche models, including Porsche Cayenne, Porsche Boxster, Porsche Cayman, and Porsche 911. As a heated sensor, it supports faster operating temperature and stable ECU feedback after startup. The specific-fit design helps ensure the correct position, connector style, and harness length for the listed vehicle applications. Walker Products 350-34649 is a practical replacement when servicing a failed downstream oxygen sensor that has triggered fault codes, poor engine performance, higher fuel consumption, or increased exhaust emissions.

Walker Products Aftermarket has supplied engine management components since 1946, with a focus on OE-style replacement parts for worldwide vehicle coverage. This part cross-references no listed aftermarket part numbers in the provided data.

What It Helps Address

• Check engine light or malfunction indicator light related to downstream oxygen sensor faults
• Rough engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel monitoring
• Elevated exhaust emissions from a failing sensor
• Diagnostic trouble codes stored in the ECU for the affected sensor circuit

Installation Notes and Tips

• Compatible With 2015-2018 Porsche Cayenne, downstream right and downstream left.
• Compatible With 2008-2010 Porsche Cayenne, downstream right and downstream left.
• Compatible With 2005-2012 Porsche Boxster, downstream right and downstream left.
• Compatible With 2006-2012 Porsche Cayman, downstream right and downstream left.
• Compatible With 2010-2011 Porsche 911, downstream right and downstream left.
• Compatible With 2007-2008 Porsche 911, downstream right and downstream left.
• Compatible With 2008 Porsche Cayenne, downstream positions for cylinders 1-3 and 4-6.
• Inspect the sensor, wiring harness, and connector for physical damage before installation.
• Confirm the downstream location and connector match the original sensor before replacement.

Quality Assurance

Walker Products manufactures engine management sensors as OE-replacement components and operates as an Automotive ISO9001/TS 16949 certified company. Part number 350-34649 is built for the specified application and fitment position to support the ECU feedback required by the vehicle.