Walker 350-34425 Oxygen Sensor - Center or Downstream

OE-Style Oxygen Sensor for Volvo

Walker Products 350-34425 is a heated oxygen sensor built as a specific-fit replacement for select Volvo applications. It is engineered to provide the ECU with the feedback needed for proper fuel control and emissions monitoring, making it a direct service part for center and downstream sensor locations.

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors for OE-style replacement use. The 350-34425 follows the application-specific fitment approach used across the line, with the correct connector style, threaded mounting, and harness length for the listed Volvo vehicles.

Key Features

• Heated oxygen sensor for emissions and fuel-trim feedback
• Specific fit for listed Volvo S40, V50, S60, V70, and S70 applications
• Threaded mounting with 18.0 mm thread diameter
• 4-wire design with 20-gauge wiring
• Radiused polygon male connector
• Wiring harness length: 29.45 in.
• Overall length: 32.99 in.

Detailed Description

Walker Products part number 350-34425 is an OE-style heated oxygen sensor for Volvo models that require a center or downstream sensor position. It is designed to deliver the diagnostic feedback the ECU uses to manage air-fuel ratio, monitor emissions performance, and detect sensor-related faults. This makes it a practical replacement for Volvo S40 and V50 center oxygen sensor service, as well as Volvo S60, V70, and S70 downstream oxygen sensor replacement needs.

Fits 2005-2010 Volvo S40, center. Fits 2005-2010 Volvo V50, center. Fits 2001 Volvo S60, downstream. Fits 1999-2001 Volvo V70, downstream. Fits 1999-2000 Volvo S70, downstream. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Poor engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate sensor readings
• Higher exhaust emissions from a failing heated O2 sensor
• Fault codes stored in the ECU for sensor or related system issues

Installation Notes and Tips

Confirm the sensor position before ordering, since this part is listed for center and downstream locations only. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before installation. Threaded mounting and connector shape should be matched to the original unit for proper fitment on the listed Volvo applications.

Quality Assurance

Walker Products has supplied engine management components since 1946 and manufactures sensors to support OE-style replacement requirements. The company is ISO 9001/TS 16949 certified, with application-specific cataloging and manufacturing controls for listed vehicle fitment.