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Mass Air Sensor & Air Flow Meters

BMW Mass Air Sensor & Air Flow Meters

We sell OEM air mass sensors, air flow meters, and HFMs (Hot Film Meter) for many BMWs. When the mass air sensor is bad you will notice your engine running out of tune. Your fuel mileage will suffer, throttle response will be poor, and you will notice a lack of power.

There should be a Check Engine Light to alert you that the air sensor is having problems. However, there may not be a fault code for the air meter itself. Often times the code comes up as fuel trim or lean condition. In these cases the air sensor could be just one of a number of potential problems.

We only sell air sensors from Original Equipment Manufacturers like, Bosch, VDO, and Siemens. Please note that HFMs are an electrical part and cannot be returned for refund.

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MAP Sensor

T#:39329317

Part#: 13628644432

Back Ordered

$ 110.00

This product was last offered at the strikethrough price on
08-12-2026

$ 100.99 USD

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$ 100.99 USD

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The manifold absolute pressure sensor (MAP sensor) is one of the sensors used in your N55 engine's electronic control system. The manifold absolute pressure sensor provides instantaneous manifold pressure information to the engine's electronic control unit (ECU/DME). The data is used to calculate air density and determine the engine's air mass flow rate, which in turn determines the required fuel metering for optimum combustion, efficiency, and ignition timing.

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Vitesco Mass Air Flow Sensor - N55, N52

T#:33512934

Part#: 13627593624

In Stock

$ 219.99 USD

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$ 219.99 USD

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The MAF of your vehicle decides the quantity of fuel that is fed to the injectors according to the volume of air coming through the intake.

Mass Air Flow Sensor (MAF) Kit - M57

10X Entries Into Our F80 M3 Sweepstakes

T#:56507867

Part#: 13628509725KT2

In Stock

$ 171.99

This product was last offered at the strikethrough price on
08-14-2026

$ 131.99 USD

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$ 131.99 USD

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Turner Motorsport has put together a focused replacement kit featuring a genuine Bosch MAF sensor alongside all new installation hardware. The included Bosch sensor ensures your ECU receives exact airflow measurements under high load and daily driving alike, while the factory spec Torx screws and robust hose clamp ensure a precise, airtight seal against unmetered air entry.

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Hitachi Mass Air Flow Sensor - M52TU, M54 Engine (E46, E39, Z3) ...

T#:5691196

Part#: 13621432356

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$ 156.99 USD

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$ 156.99 USD

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Replacement mass air sensor for M52TU 2.5/2.8 and M54 2.5 engines. 3.0" diameter. The mass air sensor/meter measures the volume of air being fed into the engine so that the fuel levels can be adjust for optimal performance. A faulty sensor can lead to improper fuel mixture and rough idle and poor performance and gas mileage. Replace your faulty sensor with a high-quality sensor to restore normal operation.

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E30 M3 Evo III Fuel Injection Upgrade

10X Entries Into Our F80 M3 Sweepstakes

T#:4083

Part#: E30M3-EVOIII-INJ

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$ 2,318.99 USD

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$ 2,318.99 USD

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Our racing fuel injection upgrade for the E30 M3 2.5 consists of four Evo III fuel injectors, Evo III Air flow meter and custom calibrated performance chip. This kit was originally designed for use on the TMS 2.5 liter engine conversion with: Stage 3 head, Schrick cams, Evo III header and straight non cat exhaust but has been a successful upgrade on other variations of this set up. The addition of these components adds the ability to supply more fuel that the 2.5 liter high performance motor demands. Choose from 7800 or 8200 rpm redline (For off road/race use only).

Kit Includes:
1 x 13621466349 - Air Flow Meter
1 x Custom Turner Motorsport Peformance Chip
4 x 13641316511 - EVO 3 Fuel Injectors

This item fits the following BMWs:
1988-1991 E30 BMW M3

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BMW Mass Air Sensor & Air Flow Meters

MAP Sensor

Vitesco Mass Air Flow Sensor - N55, N52

Mass Air Flow Sensor (MAF) Kit - M57

Hitachi Mass Air Flow Sensor - M52TU, M54 Engine (E46, E39, Z3) ...

E30 M3 Evo III Fuel Injection Upgrade

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