Air Flow Sensor BMW F20 F21 F30 F31 F32 N55 Mass Meter Sensor 0280218279

Air Flow Sensor BMW F20 F21 F30 F31 F32 N55 Mass Meter Sensor is a component from the Air and fuel intake sensors group, designed for N55 petrol engines in selected BMW F-series models. It enables precise measurement of the intake air volume, which translates into stable engine operation, correct fuel dosage, and predictable throttle response. This is a solution for users looking for a proven, original component with factory performance characteristics.

Specifications and technical data

• SKU: 7612746
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7612746
• Substitutable numbers: 7612746, 13627612746, 0280218279
• Fuel type: Petrol
• Category: Air Intake & Fuel Sensors

Function and role of the mass air flow sensor in the N55 engine

The mass air flow sensor in the N55 petrol engine is responsible for the continuous measurement of the air mass supplied to the intake manifold. Based on this data, the engine control unit (ECU) selects the appropriate fuel dose, corrects ignition timing, and manages auxiliary equipment. A properly functioning sensor helps maintain:

• stable idle speed,
• smooth acceleration without jerking,
• optimal air-fuel mixture combustion,
• consistent cooperation with the turbocharging system and exhaust system.

For a turbocharged petrol engine, accuracy of air flow measurement is particularly important, as even minor deviations can result in a loss of power, increased fuel consumption, or the illumination of error warning lights.

Benefits of using an original BMW sensor

The original mass air flow sensor designed for the N55 unit maintains factory signal characteristics, meaning the engine control unit does not require additional tuning. In practice, this means:

• maintaining stock engine performance parameters across the entire rev range,
• correct cooperation with injection and ignition maps,
• lower risk of errors related to the air-fuel mixture,
• consistency with other intake system components in BMW F20, F21, F30, F31, and F32 models.

Choosing a component from the same group as the factory-installed element is particularly important in modern petrol engines, where precision of sensor signals directly affects engine durability and driving comfort.

Product characteristics and application

The presented mass air flow sensor belongs to the Air and fuel intake sensors category and is designed for use with petrol fuel systems. The sensor's design is adapted to the intake architecture of the N55 engine, allowing for installation in place of the factory component without the need for system modifications.

The product comes from the BMW brand, which ensures compliance with factory quality and compatibility standards. As a result, it is a suitable choice both when replacing a damaged sensor and when restoring stock engine performance parameters after previous issues with the intake system.

Condition, selection, and installation

The mass air flow sensor is offered as a used item, which allows for economical repair while maintaining original specifications. Before installation, it is recommended to verify compatibility with your specific BMW F-series model and check the condition of the intake system (hose tightness, air filter condition) to fully utilize the sensor's capabilities.

Selecting the right mass air flow sensor for a specific engine version should be based on the vehicle's technical data and product specification information. A correctly selected component helps avoid issues with ECU adaptation and ensures predictable engine behavior during daily operation.

Intake system expansion and related components

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional flow sensors, air temperature measurement elements, or fuel dosage control components, check the available parts in the BMW Air and fuel intake sensors category.

When choosing a used mass air flow sensor or other engine electronics, it is worth familiarizing yourself with practical tips regarding the selection and verification of such components – the article Second life for electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors? will be helpful, as it contains specific advice on the safe use of second-hand automotive electronics.