Walker 245-2191 Mass Air Flow Sensor

Walker Mass Air Flow Sensor 245-2191

Walker Mass Air Flow Sensor 245-2191 is a direct-fit engine management component for select Ford, Lincoln, and Mercury applications. It is built with a 4-terminal female connector and includes mounting hardware, making it a practical replacement when the original sensor is no longer reading airflow accurately.

Key Features

• Walker Mass Air Flow Sensor, part number 245-2191
• 4-terminal female connector for the specified application
• Mounting hardware included
• Housing not included
• Engineered to meet or exceed OEM standards and specifications
• Backed by Walker Products’ in-house manufacturing, engineering, and technical support resources

Product Line Overview

The Walker Mass Air Flow Sensor line is part of Walker Products’ engine sensor and fuel system portfolio. Walker has supplied automotive aftermarket components since 1946 and manufactures engine management parts with ISO 9001/IATF16949 quality systems in place. This focus supports accurate vehicle application coverage and consistent part production for service replacement needs.

Detailed Description

This mass air flow sensor helps the engine control system measure incoming air so fuel delivery can be managed correctly. For drivers servicing a Ford F-150, Ford Expedition, Lincoln Navigator, or Lincoln Blackwood, Walker 245-2191 provides a replacement option for restoring proper airflow signal input after sensor wear, contamination, or electrical failure. This part cross-references 105028H7 and MF0904 for the same application.

Compatible Vehicles

• Fits 2004 Ford F-150 Heritage, N/A
• Fits 1999-2003 Ford F-150, N/A
• Fits 1999-2003 Ford F-250, N/A
• Fits 1999-2002 Ford Expedition, N/A
• Fits 2002 Lincoln Blackwood, N/A
• Fits 1999-2002 Lincoln Navigator, N/A

What It Helps Address

• Rough idle caused by incorrect airflow readings
• Hesitation or sluggish throttle response
• Check engine light related to mass air flow sensor faults
• Poor fuel economy from inaccurate air measurement
• Hard starting or stalling tied to sensor signal issues

Installation Notes

Verify connector style, terminal count, and vehicle application before installation. Inspect the intake tract and air filter housing for dirt, oil residue, or leaks that can affect sensor performance. Use the included mounting hardware as required by the application, and clear diagnostic trouble codes after installation if the vehicle calls for it.

Quality Assurance

Walker Products manufactures engine sensors and fuel system components to meet or exceed OEM standards and specifications. The company supports production with its own engineering, product management, and technical staff, and operates under ISO 9001/IATF16949 quality systems.