Walker 245-1191 Mass Air Flow Sensor

Walker Mass Air Flow Assembly for Ford and Lincoln

Walker Mass Air Flow Assembly 245-1191 is a direct-fit mass air flow sensor assembly for select Ford and Lincoln applications. It is built with a housing included and a 4-terminal female connector to match the listed vehicle configurations.

Key Features

• Mass air flow sensor assembly for engine air measurement
• Housing included for a complete assembly-style replacement
• 4-terminal female connector
• Walker Mass Air Flow Assembly product line
• Part number 245-1191 for accurate ordering and fitment lookup

Product Details

Walker Products has supplied fuel system and engine management components since 1946, with manufacturing and engineering support focused on meeting or exceeding OEM standards and specifications. The Walker Mass Air Flow Assembly line is part of that engine sensor offering, giving technicians and vehicle owners a replacement option for air metering issues on Ford F-150, Ford F-250, Ford Expedition, Ford F-150 Heritage, Lincoln Blackwood, and Lincoln Navigator applications. This part cross-references Delphi AF10131 for the same application. Part number 245-1191 is also referenced in interchange listings for additional catalog matching.

What It Helps Address

• Rough idle caused by inaccurate airflow readings
• Hesitation or stumble during acceleration
• Check engine light related to mass air flow sensor faults
• Poor fuel trim behavior from incorrect air measurement
• Driveability issues on Ford F-150 and Lincoln Navigator applications

Installation Notes and Tips

Verify connector style, terminal count, and housing configuration before installation. This assembly uses a female connector and 4 terminals, and mounting hardware is not included. Confirm the vehicle year and model against the listed fitment before replacing the original sensor assembly. For best results, inspect the intake tract for contamination or leaks that could affect airflow readings after installation.

Quality Assurance

Walker Products manufactures engine management components to meet or exceed OEM standards and specifications. The company is ISO 9001 and IATF 16949 certified, with product management, engineering, and technical support backing the part line.

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