Walker 350-34597 Oxygen Sensor - Upstream

Walker 350-34597 Oxygen Sensor Overview

Walker Products 350-34597 is a heated oxygen sensor built as a specific-fit OE replacement for select Saab and Porsche applications. It is engineered to provide the ECU with the exhaust feedback needed for fuel control and emissions monitoring, making it a direct choice for upstream sensor service on the listed vehicles.

Walker Products Aftermarket focuses on application-specific engine management and oxygen/air-fuel sensors, and this part follows that approach with the correct fitment position, connector style, and wiring configuration for the intended vehicle applications.

Key Features

• Heated oxygen sensor for faster operating temperature response
• Specific-fit design for the listed upstream applications
• 4-wire configuration with 20-gauge wiring
• Radiused polygon male connector for vehicle-specific connection
• Threaded mounting with 18.0 mm thread diameter
• Overall length: 44.41 in; wiring harness length: 40.87 in
• Walker Products part number 350-34597

Detailed Description

The Walker Products 350-34597 oxygen sensor is intended for upstream placement where the engine control unit relies on accurate exhaust-gas feedback to manage air-fuel ratio and emissions performance. This sensor is a direct-fit replacement for select 1994 Porsche 911, 1996-1998 Saab 900, 1996-1998 Saab 9000, and 1999 Saab 9-3 applications listed below. For buyers searching for a 1999 Saab 9-3 upstream oxygen sensor or a 1994 Porsche 911 4-wire upstream oxygen sensor, this part number provides the specified fitment and connector layout.

Walker Products 350-34597 is built for the exact application and mounting position, helping restore proper ECU feedback when the original sensor has aged or failed. This part cross-references Bosch 15733 and Denso 234-4012 for the same application.

What It Can Help Address

• Check engine light related to upstream oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel control
• Elevated exhaust emissions from a degraded sensor signal
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes and Tips

• Confirm the vehicle chassis break and engine bank/sensor position before ordering.
• Inspect the sensor wiring harness and connector for heat damage, corrosion, or abrasion before installation.
• Verify the threaded mounting location and connector shape match the original part.
• Use the listed upstream position only; do not substitute for downstream locations.
• Clear stored fault codes after installation and verify proper ECU feedback during a road test.

Quality Assurance

Walker Products manufactures engine management sensors as OE-style replacements for global vehicle applications and operates as an Automotive ISO9001/TS 16949 certified company. The Walker Products Aftermarket line is built around application-specific fitment and diagnostic feedback requirements for modern engine management systems.

• Fits 1999 Saab 9-3, upstream
• Fits 1996-1998 Saab 900, upstream
• Fits 1996-1998 Saab 9000, upstream
• Fits 1994 Porsche 911, upstream