Walker 350-34458 Oxygen Sensor

Walker 350-34458 Oxygen Sensor for Volvo and Saab

Walker Products 350-34458 is a heated oxygen sensor built as a specific-fit OE replacement for select Volvo, Saab, and Saturn applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions performance on the listed downstream and upstream positions.

Key Features

• Heated oxygen sensor with specific-fit application coverage
• Threaded mounting type with 18.0 mm thread diameter
• 4-wire design with 20-gauge wiring
• Radiused polygon male connector for vehicle-specific connection
• Wiring harness length: 27.87 in.; overall length: 31.42 in.
• Walker Products Aftermarket line for engine management and oxygen/air-fuel sensor replacement

Product Details

Walker Products Aftermarket focuses on engine management sensors engineered for OE-style replacement across a wide range of vehicles. Part number 350-34458 is built for specific fitment and position, including downstream and upstream locations on select Volvo C30, C70, S40, S60, S70, S80, V50, V70, XC70, XC90, Saab 9-3, Saab 9-5, and Saturn L300, LW300, LS2, and LW2 applications. For drivers searching for a Volvo S60 downstream oxygen sensor or a Saab 9-5 upstream oxygen sensor, this part number provides a direct-fit solution for the listed vehicles.

This oxygen sensor helps the ECU monitor exhaust oxygen content so the engine can adjust air-fuel delivery and emissions strategy. Walker Products states that each application is manufactured for the correct vehicle position and diagnostic feedback requirements, making 350-34458 a practical replacement when the original sensor has failed or is reporting incorrect data. This part cross-references common OE-style replacement needs for the same application.

What It Helps Address

• Check engine light or malfunction indicator light related to oxygen sensor faults
• Poor engine performance caused by inaccurate exhaust feedback
• Increased fuel consumption from incorrect air-fuel control
• Higher exhaust emissions from a failing upstream or downstream sensor
• Fault codes stored in the ECU for the affected sensor circuit

Installation Notes and Tips

Confirm the vehicle year, make, model, and sensor position before ordering. This part is listed for specific downstream and upstream locations, including downstream left, downstream right, downstream front, and upstream positions where shown in the fitment data. Inspect the sensor wiring harness and connector for damage before installation, since physical damage can shorten sensor life and affect operation. Verify the connector shape, wire count, and thread size match the original unit on the vehicle.

Quality Assurance

Walker Products has been producing engine management and fuel system components since 1946 and is an Automotive ISO 9001/TS 16949 certified company. The 350-34458 oxygen sensor is manufactured as a vehicle-specific replacement for the listed applications and is backed by Walker Products’ OE-focused product development standards.