Walker 350-35016 Oxygen Sensor - Upstream Front or Upstream Rear

Walker 350-35016 Oxygen Sensor Overview

Walker Products 350-35016 is a heated oxygen sensor built as a specific-fit OE replacement for select Ford, Mercury, Mazda, and Mitsubishi applications. It is engineered to provide the ECU with the exhaust feedback needed for accurate fuel control, emissions monitoring, and fault-code diagnosis.

For drivers searching for a replacement oxygen sensor for a 2010 Ford Fusion upstream front or rear, or a 2009-2010 Mazda 6 upstream sensor, this part number is matched to the listed application and connector style.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for the listed vehicle positions
• 5-wire configuration with a male radiused polygon connector
• 18.0 mm thread diameter and threaded mounting type
• 8.98 in. wiring harness length and 12.52 in. overall length
• Built for ECU feedback on emissions and fuel-trim control

Application Details

Walker Products Aftermarket is the product line behind this sensor family, focused on engine management and oxygen/air-fuel sensor replacements for OE-style fitment. Part number 350-35016 is designed for upstream locations on the listed vehicles, including the 2014 Mitsubishi Mirage upstream sensor, 2010 Ford Fusion upstream front and upstream rear positions, 2010 Mercury Milan upstream front and upstream rear positions, and 2009-2010 Mazda 6 upstream front and upstream rear positions.

This part cross-references no listed aftermarket part numbers in the provided data. If you are replacing a failed upstream oxygen sensor on a Ford Fusion, Mercury Milan, Mazda 6, or Mitsubishi Mirage, 350-35016 is the direct application-specific option shown here.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Rough running caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate exhaust readings
• Higher exhaust emissions from a degraded sensor signal
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes

Confirm the vehicle position before ordering, since this sensor is listed for upstream front and upstream rear locations on specific applications. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear before installation, and verify the threaded mounting point and connector shape match the original unit.

For best results, compare the original sensor length, wire count, and connector style to the specifications listed here. This helps ensure proper routing and ECU feedback on the intended Ford Fusion, Mercury Milan, Mazda 6, or Mitsubishi Mirage application.

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 focused on engine management sensors and fuel system components for vehicle applications worldwide.