Walker 350-34389 Oxygen Sensor

Walker 350-34389 Oxygen Sensor Overview

Walker Products 350-34389 is a heated oxygen sensor built as a direct-fit OE-style replacement for specific Porsche, Saab, and Volvo applications. It is engineered to provide the ECU with the correct exhaust feedback for fuel control and emissions monitoring.

For vehicles showing a check engine light, poor fuel economy, or elevated emissions, this Walker Products Aftermarket sensor is a targeted replacement for the affected upstream or downstream position.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 26.69
• Overall length: 30.24
• Radiused polygon connector shape for application-specific fitment

Product Line Details

Walker Products Aftermarket engine management sensors are developed as OE replacement parts for a wide range of vehicles. The 350-34389 follows that approach with application-specific fitment and sensor feedback intended to match the vehicle’s diagnostic requirements.

Detailed Description

The Walker 350-34389 oxygen sensor is used in exhaust monitoring systems where accurate air-fuel feedback is required by the ECU. It is listed for upstream and downstream positions across select Porsche 911, Saab 9-3, Saab 9-5, Saab 900, Volvo C70, Volvo S70, Volvo V70, and Volvo 850 applications. If your vehicle is showing fault codes tied to the oxygen sensor circuit, this part number 350-34389 provides a direct replacement option for the specified location.

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

What It Can Help Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Rough engine operation from inaccurate air-fuel readings
• Elevated exhaust emissions
• Fault codes stored in the ECU for the affected sensor position

Installation Notes and Tips

• Confirm the exact position before ordering: upstream right, upstream left, downstream right, downstream left, upstream, or downstream.
• Verify chassis/VIN breakpoints for Saab and Volvo applications, especially 1998-2000 models.
• Inspect the sensor wiring harness and connector for heat damage or physical wear before installation.
• Check the exhaust bung thread size and mounting style against the listed 18.0 mm threaded design.
• Use the vehicle’s fault codes and service information to confirm the affected bank and sensor location.

Quality Assurance

Walker Products has supplied engine management and fuel system components since 1946 and operates as an ISO 9001/TS 16949 certified company. The 350-34389 is built to support the diagnostic feedback expected by the ECU in the listed applications.