Walker 350-34303 Oxygen Sensor

Walker 350-34303 Oxygen Sensor Overview

Walker Products 350-34303 is a heated oxygen sensor built as a direct OE-style replacement for specific applications. It is engineered for the correct fitment position and ECU feedback on vehicles such as the Saab 9-3, Saab 9-3X, Cadillac BLS, and Porsche 911.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for precise application matching. The 350-34303 is designed for threaded mounting, a 4-wire heated setup, and the connector and harness layout needed for the listed upstream and downstream positions.

Key Features

• Part number: 350-34303
• Heated oxygen sensor for specific vehicle applications
• Specific fit design for correct sensor placement
• 4-wire configuration with male radiused polygon connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 19.21
• Overall length: 22.76
• Wire gauge: 22

Detailed Description

This Walker oxygen sensor is built to replace the original sensor on selected European vehicles where accurate exhaust feedback is required by the ECU. It supports upstream and downstream positions depending on application, including Fits 2004-2011 Saab 9-3, upstream; Fits 2010-2011 Saab 9-3X, upstream; Fits 2007-2008 Cadillac BLS, upstream; and Fits 2002-2005 Porsche 911, upstream right, upstream left, downstream right, and downstream left. The 350-34303 is a practical choice when diagnosing sensor-related fault codes, poor fuel economy, elevated emissions, or a malfunction indicator light tied to oxygen sensor performance.

Walker Products Aftermarket has supplied engine management components since 1946, and this sensor reflects that OE-replacement focus with application-specific fitment and feedback characteristics. If the original sensor, wiring harness, or connector is damaged, replacement with the correct sensor can restore proper signal input to the ECU.

What It Can Help Address

• Oxygen sensor fault codes stored in the ECU
• Rough engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from a failing heated oxygen sensor
• Higher exhaust emissions from inaccurate sensor readings
• Malfunction indicator light related to sensor performance

Installation Notes and Tips

Confirm the exact position before ordering, since this part is listed for upstream and downstream locations across different applications. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation. Use the correct threaded mounting location and verify the connector shape and wire count match the original unit on the vehicle.

For fitment-specific searches, this part is commonly referenced for Walker 350-34303 Saab 9-3 upstream oxygen sensor replacement, Walker 350-34303 Saab 9-3X upstream oxygen sensor replacement, and Porsche 911 upstream or downstream oxygen sensor service.

Quality Assurance

Walker Products manufactures engine management sensors as OE-replacement components for specific applications and backs its product line with ISO 9001/TS 16949 certified manufacturing practices.