Walker 350-34639 Oxygen Sensor - Downstream

Walker Oxygen Sensor for Suzuki SX4

Walker Products 350-34639 is a heated oxygen sensor built as a specific-fit OE-style replacement for downstream bank 1 sensor 2 applications. It is engineered for 2008-2013 Suzuki SX4 models and supports the ECU with the diagnostic feedback needed for proper fuel control and emissions monitoring.

Key Features

• Specific-fit oxygen sensor for the downstream position
• Heated sensor design for faster operating temperature
• 4-wire configuration with 20-gauge wiring
• Female connector with radiused polygon shape
• Threaded mounting design with 18.0 mm thread diameter
• Overall length: 13.9 in.; wiring harness length: 10.35 in.
• Walker Products Aftermarket line for engine management and oxygen/air-fuel sensor replacement

Product Details

Walker Products 350-34639 is designed for direct replacement in the downstream bank 1 sensor 2 location on select Suzuki SX4 vehicles. As a heated oxygen sensor, it helps the engine control module monitor exhaust oxygen content after the catalytic converter, supporting accurate feedback for fuel trim and emissions system operation. This part number is built for the specified application and fitment position, making it a practical choice for a 2008-2013 Suzuki SX4 oxygen sensor replacement. Walker Products 350-34639 is part of the Walker Products Aftermarket engine management sensor line, which focuses on application-specific replacement parts for modern vehicle electronics.

This part cross-references no listed aftermarket part numbers for the same application.

Common Issues It May Address

• Check engine light related to downstream oxygen sensor performance
• Poor fuel economy caused by incorrect exhaust feedback
• Increased exhaust emissions from a failing sensor
• Rough engine operation tied to inaccurate ECU input
• Stored fault codes for the affected sensor circuit or related systems

Installation Notes and Tips

Confirm the vehicle is a 2008-2013 Suzuki SX4 and verify the downstream bank 1 sensor 2 location before installation. Inspect the sensor wiring harness, connector, and surrounding exhaust components for heat damage, corrosion, or physical wear, since damaged wiring can shorten sensor life. Threaded installation requires proper seating in the exhaust bung and careful handling of the connector to avoid pin damage.

Quality Assurance

Walker Products states that its engine management and oxygen/air-fuel sensors are developed as OE replacement parts for worldwide vehicle applications. The company is ISO 9001/TS 16949 certified and has supplied engine management and fuel system components since 1946.