Walker 350-34135 Oxygen Sensor - Downstream, Downstream Front or Downstream Rear

Walker 350-34135 Oxygen Sensor for Volvo and Saab

Walker Products 350-34135 is a heated, specific-fit oxygen sensor engineered as an OE-style replacement for select Volvo and Saab applications. It is built for downstream placement and provides the ECU with the feedback needed to monitor exhaust performance and fuel control.

For drivers searching for a downstream oxygen sensor for 1993-1998 Volvo 850, Volvo S70, Volvo V70, Volvo C70, or Saab 900, this part number is matched to the listed chassis and factory-code applications.

Key Features

• Heated oxygen sensor for faster operating temperature
• Specific-fit design for the listed vehicle applications
• 4-wire configuration with male connector
• Threaded mounting with 18.0 mm thread diameter
• Wiring harness length: 78.27
• Overall length: 81.81
• Radiused polygon connector shape

Product Details

Walker Products Aftermarket 350-34135 is part of the Walker Products Engine Management line, which focuses on oxygen and air-fuel sensors built for direct replacement use. This sensor is intended for downstream installation on the specified Volvo and Saab models, including 1993-1994 Volvo 850, 1994-1998 Volvo 850, 1998 Volvo S70, 1998 Volvo V70, 1998 Volvo C70, and 1996-1997 Saab 900. The design supports ECU feedback for emissions and engine management systems, making it a practical choice when replacing a worn or failed downstream sensor.

This part cross-references no listed interchange numbers in the provided data.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rough running caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel monitoring
• Elevated exhaust emissions from a degraded downstream sensor
• Fault codes stored in the ECU for sensor-related issues

Installation Notes and Tips

Verify the vehicle’s chassis number, factory code, and sensor position before ordering. This part is listed for downstream, downstream front, and downstream rear applications depending on the vehicle. Inspect the sensor connector, wiring harness, and surrounding exhaust components for heat damage or corrosion before installation. Threaded mounting requires proper thread engagement and correct placement in the exhaust stream.

Quality Assurance

Walker Products states that its engine management sensors are developed as OEM replacement parts and manufactured under ISO 9001 / TS 16949 quality systems. The brand has supplied engine management and fuel system components since 1946.