Walker 350-35039 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Walker 350-35039 Oxygen Sensor for Volvo and Cadillac

Walker Products 350-35039 is a heated, specific-fit oxygen sensor engineered as an OE-style replacement for select Volvo, Cadillac, and Porsche applications. It is built for upstream placement and provides the ECU with the feedback needed for accurate fuel control and emissions monitoring.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for direct application matching
• 5-wire configuration with male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 44.8
• Overall length: 48.35
• Radiused polygon connector shape for vehicle-specific fitment

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed for original equipment replacement needs. Part number 350-35039 is designed for upstream sensor locations and is used on vehicles such as the Volvo S60, Volvo V70, Volvo XC70, Volvo S80, Volvo XC90, Volvo C70, Volvo S70, Cadillac XLR, Porsche Carrera GT, and Porsche 911. In upstream applications, the sensor helps the ECU monitor exhaust oxygen content so the engine can maintain proper air-fuel balance and emissions control. This part number 350-35039 is built for the specified fitment position and connector layout, which is important when replacing a failed sensor on a Volvo S80 upstream oxygen sensor or a Cadillac XLR upstream right oxygen sensor.

Walker Products has supplied engine management components since 1946 and manufactures to automotive ISO 9001/TS 16949 standards. This part cross-references Bosch 15717 and Denso 234-9005 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect air-fuel feedback
• Rough running or hesitation from inaccurate exhaust readings
• Elevated exhaust emissions from a failing upstream sensor
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes

Verify the vehicle’s year, make, model, and sensor position before installation. Confirm the connector style, wire count, and thread diameter match the original sensor. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten sensor life and affect ECU feedback. For fitment-specific service, use this part for upstream oxygen sensor replacement on the listed Volvo, Cadillac, and Porsche applications, including 2001-2009 Volvo S60 upstream and 2006 Cadillac XLR upstream left or right.

Quality Assurance

Walker Products manufactures this oxygen sensor as an OE replacement part for the specified application and backs its engine management line with ISO 9001/TS 16949 quality systems.