Walker 350-64051 Oxygen Sensor - Upstream

Walker 350-64051 Oxygen Sensor for Volvo

Walker Products 350-64051 is a heated oxygen sensor built as a specific-fit OE replacement for select Volvo applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance on 2001-2002 Volvo S60 and Volvo V70 upstream locations.

Key Features

• Specific-fit heated oxygen sensor for upstream placement
• 4-wire design with 20-gauge wiring
• Radiused polygon male connector for application-specific connection
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 22.36 in.; overall length: 25.91 in.
• Walker Products Aftermarket line for engine management and oxygen sensor replacement

Product Details

The Walker Products Aftermarket line focuses on application-specific engine management components, including oxygen and air-fuel sensors built for direct replacement use. Part number 350-64051 is made for the upstream sensor position on 2001-2002 Volvo S60 and 2001-2002 Volvo V70 models, where accurate exhaust feedback is critical for ECU fuel-trim control. If your Volvo S60 or Volvo V70 has a stored fault code, poor fuel economy, rough running, or an illuminated MIL, this sensor is the type of replacement commonly used to restore proper sensor input.

This part cross-references Bosch (e.g., 15717) for the same application.

What It Helps Address

• Check engine light related to upstream oxygen sensor faults
• Rich or lean fuel mixture codes
• Poor engine performance and drivability issues
• Increased fuel consumption
• Higher exhaust emissions from inaccurate sensor feedback

Installation Notes and Tips

Install in the upstream oxygen sensor location only for the listed Volvo applications. Before replacement, inspect the sensor wiring harness and connector for heat damage, corrosion, or broken terminals, since damaged wiring can shorten sensor life and trigger repeat fault codes. Confirm thread size, connector shape, and harness length match the original sensor before installation.

Quality Assurance

Walker Products has produced engine management and fuel system components since 1946 and manufactures this sensor as a specific application replacement. The company is ISO 9001 and TS 16949 certified, with manufacturing focused on OE-style fitment and ECU feedback requirements.