Walker 245-1428 Mass Air Flow Sensor

Walker Sensor Only MAF Sensor 245-1428

Walker 245-1428 is a sensor-only mass air flow sensor for select Toyota and Scion applications. It is built as a new, tested replacement with OE-style calibration focus for accurate airflow measurement and stable fuel trim control.

Key Features

• Sensor-only mass air flow sensor for faster, more economical replacement
• Black housing with oblong connector shape
• 5-terminal female connector with pin terminals
• 2 mounting holes for direct-fit installation
• 100% new, never remanufactured
• Programmed and tested for fit, form, and function before release
• Custom tuned flow characteristics across the airflow range

Product Details

The Walker Sensor Only line focuses on replacement MAF sensors without the housing assembly. For vehicles where the original housing is still serviceable, this format can simplify service while maintaining the airflow signal quality needed by the engine control system. Part number 245-1428 is engineered for 2017-2020 Toyota 86 and 2013-2016 Scion FR-S applications, with calibration verified through production testing and on-vehicle validation. Walker also manufactures many of its high-demand MAF sensors in the USA using OEM-quality components and custom circuit board programming.

This part cross-references no listed interchange numbers for the same application.

What It Helps Address

• Rough idle caused by inaccurate airflow readings
• Check engine lights related to mass air flow sensor performance
• Hesitation or poor throttle response during acceleration
• Fuel trim issues from a drifting or contaminated MAF signal
• Driveability problems after MAF sensor wear or contamination

Installation Notes

Fits 2017-2020 Toyota 86, N/A. Fits 2013-2016 Scion FR-S, N/A. Sensor-only replacement is typically used when the housing and connector area remain in good condition. Handle the sensing element carefully and avoid touching it with bare hands. Clean the air tube and connector area before installation to reduce the chance of contamination affecting the new sensor.

Quality Assurance

Walker Products has supplied fuel system components and engine sensors since 1946 and is an ISO 9001/IATF 16949 certified manufacturer. Part number 245-1428 is 100% new, programmed, and tested before sale, with calibration verified through production and vehicle testing.