Walker 350-64007 Oxygen Sensor - Upstream or Upstream Left

Walker Oxygen Sensor for Volvo Upstream Applications

Walker Products 350-64007 is a heated oxygen sensor built as a specific-fit OE replacement for select Volvo applications. It is engineered to provide the ECU with the feedback needed for accurate fuel control and emissions monitoring on upstream locations.

Compatible With Volvo S40, V50, S80, V70, and S60 upstream sensor positions, this Walker Products Aftermarket part number 350-64007 is built around the application-specific fitment and connector requirements listed below.

Key Features

• Heated oxygen sensor design for faster operating temperature
• Specific fit for the listed Volvo 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
• Wiring harness length: 25.12 in.; overall length: 28.66 in.

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors engineered as OE-style replacements for worldwide vehicle coverage. Part number 350-64007 is manufactured for the specified application and sensor position so the ECU receives the correct diagnostic feedback. This matters on newer vehicles that store fault codes when an oxygen sensor or related circuit is not performing as expected. For Volvo S40, Volvo V50, Volvo V70, Volvo S60, and Volvo S80 upstream service, the sensor’s heated design and direct-fit construction support accurate exhaust monitoring and fuel-trim control.

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

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Poor engine performance caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate sensor readings
• Higher exhaust emissions from a failing oxygen sensor
• Damaged sensor wiring or connector issues at the upstream location

Installation Notes and Tips

• Fits 2004-2010 Volvo S40, upstream.
• Fits 2005-2010 Volvo V50, upstream.
• Fits 2007 Volvo S80, upstream left, to chassis/VIN #35287.
• Fits 2005-2006 Volvo V70, upstream.
• Fits 2003 Volvo V70, upstream.
• Fits 2005 Volvo S60, upstream.
• Fits 2003 Volvo S60, upstream.
• Inspect the sensor, wiring harness, and connector for physical damage before installation.
• Verify the upstream position and VIN note on 2007 Volvo S80 applications before ordering.

Quality Assurance

Walker Products has been manufacturing engine management components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. Part number 350-64007 is built to match the listed Volvo fitment and sensor position requirements.