Walker 245-1656 Mass Air Flow Sensor

Walker 245-1656 Sensor Only MAF Sensor

Walker 245-1656 is a sensor-only mass air flow sensor for Ford Super Duty applications. It is built as a new, tested replacement with a 4-wire, 1-connector design for direct service on select Ford E-350 Super Duty, F-250 Super Duty, and F-350 Super Duty models.

Key Features

• Sensor-only mass air flow sensor for faster, more economical replacement service
• Black housing with oblong connector shape
• 4-wire, 4-terminal design with male connector
• 2 mounting holes for secure installation
• 100% new, programmed, and tested before sale
• Built to meet OE-style fit, form, and function requirements

Product Details

The Walker Sensor Only line focuses on replacing the sensing element without changing the full housing assembly. For Ford E-350 Super Duty, F-250 Super Duty, and F-350 Super Duty service, part number 245-1656 is engineered with custom-tuned flow characteristics and production testing to help maintain proper air measurement and fuel trim performance. Walker also manufactures many of its high-demand MAF sensors in the USA using OEM-quality components and circuit boards.

This part cross-references Ford JX6Z12B579A for the same application.

What It Helps Fix

• Rough idle caused by inaccurate airflow readings
• Check engine light related to mass air flow sensor performance
• Hesitation during acceleration
• Poor fuel trim behavior from a failing MAF sensor
• Driveability issues tied to contaminated or worn sensor elements

Installation Notes and Tips

Fits 2021-2024 Ford E-350 Super Duty, sensor only. Fits 2020-2022 Ford F-250 Super Duty, sensor only. Fits 2020-2022 Ford F-350 Super Duty, sensor only. Confirm the connector style, wire count, and mounting points before installation. Because MAF sensors are sensitive to contamination, handle the sensing element carefully and keep the air inlet path clean during service.

Quality Assurance

Walker Products has supplied fuel system components since 1946 and is an ISO 9001/IATF 16949 certified manufacturer. This MAF sensor is 100% new, programmed, and production tested, with on-vehicle verification used during calibration development.