Walker 350-34048 Oxygen Sensor

Walker 350-34048 Oxygen Sensor Overview

Walker Products 350-34048 is a specific-fit heated oxygen sensor engineered as an OE-style replacement for select Mazda, Ford, and Suzuki applications. It is built to deliver the ECU feedback needed for accurate fuel control, emissions monitoring, and fault-code diagnosis.

Compatible With 1996-2008 Mazda MPV, Mazda 626, Mazda MX-6, Ford Probe, and Suzuki Forenza applications in the listed sensor positions.

• Heated oxygen sensor design for faster operating temperature
• Specific-fit application for the listed vehicle positions
• 4-wire configuration with 20-gauge wiring
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for vehicle-specific connection
• Wiring harness length: 12.52 in.; overall length: 16.06 in.

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors built for direct replacement use. Part number 350-34048 is matched to the application and sensor location so the ECU receives the correct signal for closed-loop operation. This matters on vehicles such as the Mazda MPV, Mazda 626, Mazda MX-6, Ford Probe, and Suzuki Forenza, where an upstream, center, or downstream front sensor must match the original configuration.

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

What This Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Poor fuel economy caused by incorrect air-fuel feedback
• Rough running or drivability issues tied to sensor signal loss
• Elevated exhaust emissions from inaccurate mixture control
• Stored ECU fault codes for the affected sensor circuit

Installation Notes

Verify the sensor position before installation: upstream, upstream front, upstream rear, center, or downstream front, depending on the vehicle. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion before replacement. Confirm the threaded mounting point and connector style match the original part, and clear diagnostic trouble codes after installation if required by the repair procedure.

Quality Assurance

Walker Products states that its engine management sensors are developed as OE replacement parts and manufactured under Automotive ISO9001/TS 16949 quality systems. Since 1946, the brand has supplied engine management and fuel system components for a wide range of vehicle applications.