Bmw X3 Mass Air Flow Sensor

Replacement mass air flow sensor — fitment, symptoms & live UK prices.

Fits Bmw X3 — check your reg/VIN to confirm

Mass Air Flow Sensor

£25–£90.

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Will it fit my Bmw X3?

Sits in the intake pipework near the airbox — check the exact part number/connector for your engine code, as MAF sensors vary even within the same engine family.

Tip: filter by your reg on eBay's compatibility check, or match the part number stamped on your old unit.

Signs your Bmw X3 mass air flow sensor needs replacing

Hesitation or jerky acceleration
Rough idle, stalling
Poor economy
MAF fault code

Fitting it yourself

Usually a couple of screws and a connector — one of the quicker sensor swaps, but try dedicated MAF cleaner first, since dirt is a common false fault.

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Live prices£25–£90.

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