Walker 245-1604 Mass Air Flow Sensor
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Walker
 Sensor Only

Walker 245-1604 Mass Air Flow Sensor

Brand Walker 245-1604
Color Black
Terminal Type Pin
Connector Quantity 1
Connector Shape Oblong
Terminal Quantity 4
Connector Gender Female
Product line Sensor Only
Fits BMW and Mini · 129 vehicles

Sensor only replacement. Faster and more economical than a complete assembly.

100% new. Never remanufactured, with fit, form, and function tested.

Custom tuned flow. Engineered for the full flow spectrum and OE fuel trim targets.

Cross-references 13628583496 for the same application. See all 1.

$297.43Free shipping
In stock · usually ships same day before 1pm CST
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Order total $297.43
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Mass Air Flow Sensor options

Sensor Only Mass Air Flow Replacement

Walker 245-1604 is a sensor-only mass air flow sensor for select BMW and Mini applications. It is built as a new, tested replacement with a black housing, 4-pin female connector, and oblong connector shape for direct-fit service on supported vehicles.

For BMW 330i, BMW X3, Mini Cooper, and other listed applications, this Walker sensor-only design offers a focused repair option when the housing is still serviceable. Part number 245-1604 is engineered and production-tested to support proper airflow measurement and consistent engine management performance.

Key Features

  • Sensor only replacement for emission control and engine air metering service
  • 100% new, not remanufactured
  • Programmed and tested for fit, form, and function before release
  • Black finish with 1 connector, 4 terminals, and female pin-style connection
  • Designed for select BMW and Mini models from 2017-2025
  • Walker sensor-only line supports faster, more economical repairs when the housing is reusable

Product Details

Walker Products’ Sensor Only line is intended for applications where replacing the sensing element is the right service approach. The brand manufactures many high-demand MAF sensors in the USA using OEM-quality components, custom circuit boards, and application-specific calibration. This part number 245-1604 is part of that program and is verified through production testing and on-vehicle validation to help maintain OE-style fuel trim performance on the listed BMW and Mini platforms.

This part cross-references BMW 13628583496 for the same application.

What This Part 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 incorrect air metering
  • Driveability concerns on BMW 230i, 330i, X3, and Mini Cooper applications

Installation Notes

Confirm the connector style, terminal count, and vehicle application before installation. Sensor-only replacement is typically used when the existing housing and air path are clean and undamaged. Handle the sensing element carefully during installation to avoid contamination from oils, dirt, or debris.

Compatible With: 2022-2025 BMW 230i; 2023-2025 BMW 230i xDrive; 2022-2025 BMW 840i; 2022-2025 BMW 840i Gran Coupe; 2022-2025 BMW 840i xDrive; 2022-2025 BMW 840i xDrive Gran Coupe; 2022-2025 BMW X4; 2023-2024 BMW 228i Gran Coupe; 2023-2024 BMW 228i xDrive Gran Coupe; 2020-2021 BMW 228i xDrive Gran Coupe; 2020-2024 BMW 330e; 2021-2024 BMW 330e xDrive; 2020-2024 BMW 330i; 2020-2024 BMW 330i xDrive; 2022-2024 BMW 430i; 2022-2024 BMW 430i Gran Coupe; 2022-2024 BMW 430i xDrive; 2023-2024 BMW 430i xDrive Gran Coupe; 2020-2024 BMW M235i xDrive Gran Coupe; 2022-2024 BMW X3; 2022-2024 Mini Cooper; 2022-2024 Mini Cooper Clubman; 2020 Mini Cooper Clubman; 2022-2024 Mini Cooper Countryman; 2021-2023 BMW 530e; 2021-2023 BMW 530e xDrive; 2022-2023 BMW 530i; 2022-2023 BMW 530i xDrive; 2022-2023 BMW 540i; 2022-2023 BMW 540i xDrive; 2023 BMW X2; 2019-2021 BMW X2; 2022-2023 BMW X5; 2022-2023 BMW X6; 2021-2022 BMW 228i Gran Coupe, Incl.Seal; 2022 BMW 228i xDrive Gran Coupe, Incl.Seal; 2022 BMW 740i; 2022 BMW 740i xDrive; 2020-2022 BMW 745e xDrive; 2022 BMW X1, Incl.Seal; 2022 BMW X2, Incl.Seal; 2022 BMW X7; 2018-2021 BMW X1; 2019-2020 BMW 220i; 2018-2020 BMW 520i, B48D Engine; 2020 BMW 745e; 2020 BMW 745Le xDrive; 2020 BMW M340i xDrive; 2018 BMW 220i, B48C Engine; 2018 BMW 540d xDrive; 2017 BMW X1, B38C Engine.

Quality Assurance

Walker Products has supplied fuel system components and engine sensors since 1946 and is an ISO 9001/IATF 16949 certified manufacturer. The 245-1604 is 100% new, programmed, and tested before sale, with calibration verified through production and vehicle testing.

Related reading

This part fits 129 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
2025BMW230i2.0LL4Sensor Only
2025BMW230i xDrive2.0LL4Sensor Only
2025BMW840i3.0LL6Sensor Only
2025BMW840i Gran Coupe3.0LL6Sensor Only
2025BMW840i xDrive3.0LL6Sensor Only
2025BMW840i xDrive Gran Coupe3.0LL6Sensor Only
2025BMWX42.0LL4Sensor Only
2024BMW228i Gran Coupe2.0LL4Sensor Only
2024BMW228i xDrive Gran Coupe2.0LL4Sensor Only
2024BMW230i2.0LL4Sensor Only
2024BMW230i xDrive2.0LL4Sensor Only
2024BMW330e2.0LL4Sensor Only
2024BMW330e xDrive2.0LL4Sensor Only
2024BMW330i2.0LL4Sensor Only
2024BMW330i xDrive2.0LL4Sensor Only
2024BMW430i2.0LL4Sensor Only
2024BMW430i Gran Coupe2.0LL4Sensor Only
2024BMW430i xDrive2.0LL4Sensor Only
2024BMW430i xDrive Gran Coupe2.0LL4Sensor Only
2024BMW840i3.0LL6Sensor Only
2024BMW840i Gran Coupe3.0LL6Sensor Only
2024BMW840i xDrive3.0LL6Sensor Only
2024BMW840i xDrive Gran Coupe3.0LL6Sensor Only
2024BMWM235i xDrive Gran Coupe2.0LL4Sensor Only
2024BMWX32.0LL4Sensor Only
2024BMWX42.0LL4Sensor Only
2024MiniCooper2.0LL4Sensor Only
2024MiniCooper Clubman2.0LL4Sensor Only
2024MiniCooper Countryman2.0LL4Sensor Only
2023BMW228i Gran Coupe2.0LL4Sensor Only
2023BMW228i xDrive Gran Coupe2.0LL4Sensor Only
2023BMW230i2.0LL4Sensor Only
2023BMW230i xDrive2.0LL4Sensor Only
2023BMW330e2.0LL4Sensor Only
2023BMW330e xDrive2.0LL4Sensor Only
2023BMW330i2.0LL4Sensor Only
2023BMW330i xDrive2.0LL4Sensor Only
2023BMW430i2.0LL4Sensor Only
2023BMW430i Gran Coupe2.0LL4Sensor Only
2023BMW430i xDrive2.0LL4Sensor Only
2023BMW430i xDrive Gran Coupe2.0LL4Sensor Only
2023BMW530e2.0LL4Sensor Only
2023BMW530e xDrive2.0LL4Sensor Only
2023BMW530i2.0LL4Sensor Only
2023BMW530i xDrive2.0LL4Sensor Only
2023BMW540i3.0LL6Sensor Only
2023BMW540i xDrive3.0LL6Sensor Only
2023BMW840i3.0LL6Sensor Only
2023BMW840i Gran Coupe3.0LL6Sensor Only
2023BMW840i xDrive3.0LL6Sensor Only
2023BMW840i xDrive Gran Coupe3.0LL6Sensor Only
2023BMWM235i xDrive Gran Coupe2.0LL4Sensor Only
2023BMWX22.0LL4Sensor Only
2023BMWX32.0LL4Sensor Only
2023BMWX42.0LL4Sensor Only
2023BMWX53.0LL6Sensor Only
2023BMWX63.0LL6Sensor Only
2023MiniCooper2.0LL4Sensor Only
2023MiniCooper Clubman2.0LL4Sensor Only
2023MiniCooper Countryman2.0LL4Sensor Only
2022BMW228i Gran Coupe2.0LL4Incl.Seal; Sensor Only
2022BMW228i xDrive Gran Coupe2.0LL4Incl.Seal; Sensor Only
2022BMW230i2.0LL4Sensor Only
2022BMW330e2.0LL4Sensor Only
2022BMW330e xDrive2.0LL4Sensor Only
2022BMW330i2.0LL4Sensor Only
2022BMW330i xDrive2.0LL4Sensor Only
2022BMW430i2.0LL4Sensor Only
2022BMW430i Gran Coupe2.0LL4Sensor Only
2022BMW430i xDrive2.0LL4Sensor Only
2022BMW530e2.0LL4Sensor Only
2022BMW530e xDrive2.0LL4Sensor Only
2022BMW530i2.0LL4Sensor Only
2022BMW530i xDrive2.0LL4Sensor Only
2022BMW540i3.0LL6Sensor Only
2022BMW540i xDrive3.0LL6Sensor Only
2022BMW740i3.0LL6Sensor Only
2022BMW740i xDrive3.0LL6Sensor Only
2022BMW745e xDrive3.0LL6Sensor Only
2022BMW840i3.0LL6Sensor Only
2022BMW840i Gran Coupe3.0LL6Sensor Only
2022BMW840i xDrive3.0LL6Sensor Only
2022BMW840i xDrive Gran Coupe3.0LL6Sensor Only
2022BMWM235i xDrive Gran Coupe2.0LL4Sensor Only
2022BMWX12.0LL4Incl.Seal; Sensor Only
2022BMWX22.0LL4Incl.Seal; Sensor Only
2022BMWX32.0LL4Sensor Only
2022BMWX42.0LL4Sensor Only
2022BMWX53.0LL6Sensor Only
2022BMWX63.0LL6Sensor Only
2022BMWX73.0LL6Sensor Only
2022MiniCooper2.0LL4Sensor Only
2022MiniCooper Clubman2.0LL4Sensor Only
2022MiniCooper Countryman2.0LL4Sensor Only
2021BMW228i Gran Coupe2.0LL4Incl.Seal; Sensor Only
2021BMW228i xDrive Gran Coupe2.0LL4Sensor Only
2021BMW330e2.0LL4Sensor Only
2021BMW330e xDrive2.0LL4Sensor Only
2021BMW330i2.0LL4Sensor Only
2021BMW330i xDrive2.0LL4Sensor Only
2021BMW530e2.0LL4Sensor Only
2021BMW530e xDrive2.0LL4Sensor Only
2021BMW745e xDrive3.0LL6Sensor Only
2021BMWM235i xDrive Gran Coupe2.0LL4Sensor Only
2021BMWX12.0LL4Sensor Only
2021BMWX22.0LL4Sensor Only
2020BMW220i2.0LL4Sensor Only
2020BMW228i xDrive Gran Coupe2.0LL4Sensor Only
2020BMW330e2.0LL4Sensor Only
2020BMW330i2.0LL4Sensor Only
2020BMW330i xDrive2.0LL4Sensor Only
2020BMW520i2.0LL4B48D Engine; Sensor Only
2020BMW745e3.0LL6Sensor Only
2020BMW745e xDrive3.0LL6Sensor Only
2020BMW745Le xDrive3.0LL6Sensor Only
2020BMWM235i xDrive Gran Coupe2.0LL4Sensor Only
2020BMWM340i xDrive3.0LL6Sensor Only
2020BMWX12.0LL4Sensor Only
2020BMWX22.0LL4Sensor Only
2020MiniCooper Clubman2.0LL4Sensor Only
2019BMW220i2.0LL4Sensor Only
2019BMW520i2.0LL4B48D Engine; Sensor Only
2019BMWX12.0LL4Sensor Only
2019BMWX22.0LL4Sensor Only
2018BMW220i2.0LL4B48C Engine; Sensor Only
2018BMW520i2.0LL4B48D Engine; Sensor Only
2018BMW540d xDrive3.0LL6Sensor Only
2018BMWX11.5LL3Sensor Only
2017BMWX11.5LL3B38C Engine; Sensor Only
Directly replaces or cross-references 1 part number
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
13628583496