Walker 350-34307 Oxygen Sensor - Downstream Left or Downstream Right

Walker 350-34307 Oxygen Sensor Overview

Walker Products 350-34307 is a specific-fit heated oxygen sensor engineered for OE-style replacement on select vehicles. It is built for the correct application, mounting position, and ECU feedback requirements, making it a direct choice for diagnosing and restoring exhaust sensor performance on vehicles such as the Porsche 911 and Chevrolet Cruze.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for application-specific fitment. The 350-34307 follows that approach with a threaded, female-connector design and a 4-wire heated configuration for precise replacement use.

Key Features

• Part number: 350-34307
• Heated oxygen sensor for specific-fit applications
• 4-wire design with 22-gauge wiring
• 30.04 in. wiring harness length
• Radiused polygon female connector
• 18.0 mm thread diameter
• Threaded mounting type
• Overall length: 33.58 in.
• Compatible With 2009-2019 Porsche 911, downstream right
• Compatible With 2009-2019 Porsche 911, downstream left
• Compatible With 2015 Porsche 918 Spyder, downstream right
• Compatible With 2015 Porsche 918 Spyder, downstream left
• Compatible With 2016 Chevrolet Cruze, upstream

Detailed Description

Walker Products 350-34307 oxygen sensor is designed for vehicles that require a specific-fit replacement with the correct connector style, wire count, and threaded installation. It is a heated sensor intended to provide the ECU with the expected diagnostic feedback, helping maintain proper fuel control and emissions monitoring. This part number is listed for 2009-2019 Porsche 911 downstream left and downstream right positions, 2015 Porsche 918 Spyder downstream left and downstream right positions, and 2016 Chevrolet Cruze upstream service.

For buyers searching for a 2009-2019 Porsche 911 downstream oxygen sensor, a 2016 Chevrolet Cruze upstream oxygen sensor, or a 2015 Porsche 918 Spyder OE replacement sensor, Walker 350-34307 offers the application-specific fitment needed for the correct location and connector interface. This part cross-references Bosch (e.g., 17098) for the same application.

What It Helps Address

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

Installation Notes and Tips

Verify the sensor position before installation: downstream left, downstream right, or upstream, depending on the vehicle application. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before replacement, since physical damage can shorten service life. Confirm the 18.0 mm threaded mounting point and connector shape match the original unit before installation on the Porsche 911, Porsche 918 Spyder, or Chevrolet Cruze.

Quality Assurance

Walker Products manufactures engine management sensors as OE-replacement parts for specific applications and supports them through an ISO 9001 / TS 16949 certified manufacturing process. Since 1946, the Walker Products Aftermarket line has focused on application-correct sensor and fuel system components.