Genuine BMW N55 MAF Sensor Intake Air Flow Meter (Air Mass Meter, AFM/HFM Hot Film) OEM 13627612746 – Fits F20 F21 F22 F23 F30 F31 F32 F33 F36 F87 – M135i M235i 335i 435i M2

BMW N55 Air Flow Meter 13627612746 - F20 F21 F22 F23 F30 F31 F32 F33 F36 F87

Bring your turbo six back to its best with this genuine OE intake air meter for N55-powered F Series models. This is the factory hot-film air mass sensor that restores crisp throttle response, stable idle and correct fuelling on M135i, M235i, 335i, 435i and M2. If you are chasing poor MPG, hesitation or a check engine light related to air metering, replacing the meter with the correct OEM part is the proven solution.

We run this exact unit on our own N55 cars and customer feedback has been excellent. Expect smooth drivability, consistent power delivery and accurate lambda control once the failing meter is replaced.

Why this OE air meter is the right choice

• Original equipment quality for perfect fit, proper sealing and long-term reliability
• Correct intake airflow measurement for precise fuel trims and emissions performance
• Fixes common symptoms such as rough idle, flat spots on acceleration and limp mode events
• Protects the engine from over-fuelling that can cause carbon build-up
• Direct swap with the factory housing and connector - no modifications required

Typical signs your air mass sensor needs replacement

• Engine light on with airflow related fault codes
• Rich running, poor fuel economy or fuel smell
• Stumble, hesitation or surging under load
• Hunting idle, stalling or reduced power mode

Compatibility - N55 petrol engine

Fits the following F Series BMW models with the N55. Unsure about your vehicle. Email us with your VIN and we will confirm fitment.

Important: N55 engine vehicles only. If running an aftermarket intake, the meter housing must match the original internal diameter for correct scaling.

Part number

13627612746

Manufacturer

BMW - original equipment component

Warranty

Two years manufacturer warranty for UK customers and one year for international customers when a compatible VIN is supplied at checkout.

Professional fitting and support

Want it installed or need help diagnosing an airflow issue on your N55. Book expert fitting with MJ Modifications in Warwickshire. Request a quote at info@mjmodifications.co.uk.

Why buy from us

• Genuine part sourced for exact F Series applications
• Used and trusted on our own workshop cars
• Fast shipping and knowledgeable support

Also known as

Air flow meter, air mass sensor, HFM hot film sensor, intake air meter, AFM sensor, metering unit, OE airflow meter N55, BMW F Series air meter 13627612746, M135i air meter, M235i air meter, 335i air meter, 435i air meter, M2 air meter, replacement airflow sensor N55, N55 air metering sensor, F20 F21 F22 F23 F30 F31 F32 F33 F36 F87 intake sensor.

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