Walker 350-35133 Oxygen Sensor - Upstream, Upstream Rear or Upstream Right

OE Replacement Oxygen Sensor for Ford and Lincoln

Walker OE Replacement oxygen sensor 350-35133 is a specific-fit, heated wide-band sensor built for direct replacement in select Ford and Lincoln applications. It is engineered to provide the ECU with the diagnostic feedback needed for proper fuel control and emissions monitoring.

For vehicles such as the Ford F-150, Mustang, Explorer, Edge, and Lincoln MKZ, this sensor is matched to the application and mounting position for accurate signal response. The Walker OE Replacement line focuses on application-specific engine management sensors for straightforward service on modern emissions systems.

Key Features

• Part number: 350-35133
• Heated wide-band oxygen sensor for emissions and fuel-control feedback
• Specific fit for the listed Ford and Lincoln positions
• Threaded mounting type with M18 x 1.5 thread size
• 5-wire design with spade terminals and oblong connector shape
• Standard replacement grade for OE-style service
• Overall length: 328; wrench size: 22

Detailed Description

Walker Products designs its OE Replacement sensor line as an application-matched solution for engine management systems. This oxygen sensor is built for the specified upstream locations and is intended to deliver the feedback the ECU uses to manage air-fuel ratio and monitor emissions performance. It is a direct-fit option for vehicles including the Ford F-150, Ford Mustang, Ford Explorer, and Lincoln MKZ, with fitment listed for upstream, upstream rear, and upstream right positions depending on the vehicle.

This part cross-references Bosch (e.g., 17014) for the same application.

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 sensor readings
• Elevated exhaust emissions from a failing upstream sensor
• Fault codes stored in the ECU for sensor-related issues

Installation Notes and Tips

Verify the connector shape, wire count, thread size, and mounting position before installation. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear, since damaged wiring can shorten sensor life and affect readings. Confirm the exact application for your Ford or Lincoln model, especially on vehicles listed with position-specific fitment such as upstream rear or upstream right.

• Fits 2011 Ford Mustang, upstream right
• Fits 2011-2014 Ford F-150, upstream
• Fits 2012-2014 Ford Edge, upstream
• Fits 2012-2014 Ford Mustang, upstream right
• Fits 2012-2015 Ford Explorer, upstream rear
• Fits 2012-2015 Lincoln MKX, upstream
• Fits 2013-2015 Ford Flex, upstream rear
• Fits 2013-2015 Ford Taurus, upstream rear
• Fits 2013-2015 Lincoln MKS, upstream
• Fits 2013-2015 Lincoln MKT, upstream rear
• Fits 2013-2016 Lincoln MKZ, upstream
• Fits 2015 Ford Transit-150, upstream right
• Fits 2015 Ford Transit-250, upstream right
• Fits 2015 Ford Transit-350, upstream right
• Fits 2015 Ford Transit-350 HD, upstream right
• Fits 2016 Lincoln MKS, upstream

Quality Assurance

Walker Products states that its engine management and oxygen/air-fuel sensors are developed as Original Equipment replacement parts and manufactured under ISO 9001 / TS 16949 quality systems. Since 1946, the brand has focused on engine management sensors and fuel system components for vehicle service applications.