BMW F20 LCI F22 F30 F32 B37 B47 Air Mass Meter Hot Film 8570107

BMW F20 LCI F22 F30 F32 B37 B47 Air Mass Meter Hot Film is an original intake system component designed for precise measurement of intake air mass in BMW B37 and B47 series engines. Thanks to the use of hot-film technology, the sensor provides a stable signal for the engine control unit, which translates into correct fuel metering and smooth, predictable engine operation. This solution is dedicated to modern BMW F20 LCI, F22, F30, and F32 models, designed to maintain factory performance parameters.

Specifications and technical data

• SKU: 8570107-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8570107
• Substitutable numbers: 8570107, 13628570107
• Category: Air Intake & Fuel Sensors

Function and role in the intake system

The hot-film mass air flow sensor is responsible for continuous measurement of the amount of air drawn in by the engine, which is crucial for the control unit's operation regarding fuel dosage, injection timing, and exhaust aftertreatment regeneration strategies. In B37/B47 units, a correct reading from the flow meter affects:

• stable idle speed and smooth acceleration,
• maintaining the optimal air-fuel mixture,
• reducing smoke and power loss,
• proper operation of emission control systems.

Using a component that complies with BMW factory specifications allows for maintaining engine control unit calibration consistency and avoiding problems typical of low-quality replacements.

Compatibility with BMW models

The presented flow meter has been designed to work with B37 and B47 engines used in popular BMW F-series models, such as the F20 LCI, F22, F30, and F32. This means it is matched in terms of:

• mounting geometry in the intake duct,
• electrical connector and pinout,
• output signal characteristics expected by the DDE control unit.

As a result, installation is close to plug-and-play, without the need for modifications to the wiring or air filter housing, and the intake system maintains its factory tightness.

Condition, origin, and advantages of using OE parts

The item comes from the Air and fuel intake sensors group and is marked as a BMW OE product, which confirms its factory origin and compliance with the manufacturer's documentation. As a used part, it retains its original design and operating characteristics, which is particularly important in modern diesel units sensitive to the quality of sensor signals.

Using an original flow meter instead of a worn or damaged one allows you to:

• reduce the risk of control unit errors related to incorrect air measurement,
• restore proper engine dynamics and flexibility,
• keep fuel consumption close to factory levels.

Selection by OEM number and integration with the fuel system

For the correct selection of a flow meter for a specific engine version and model year, it is worth using the OEM part number and replacement numbers, as well as data from the manufacturer's catalog. This avoids compatibility issues and ensures full compliance with the engine control unit software.

Precise air mass measurement is directly linked to the operation of the injection system, which is why when diagnosing power loss, increased fuel consumption, or rough engine operation, it is worth analyzing both the flow meter data and the parameters of the injectors and fuel pump. Detailed information on the operating principles and diagnostics of the fuel system can be found in the article Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration, which helps to better understand the dependencies between sensors and engine operation.

Comprehensive service of the BMW intake zone

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

Summary

BMW F20 LCI F22 F30 F32 B37 B47 Air Mass Meter Hot Film is a factory hot-film mass air flow meter designed for modern BMW B-series units. It provides a stable, specification-compliant measurement signal, which translates into proper engine operation, predictable throttle response, and maintaining combustion parameters at the level expected by the manufacturer. This is a solution for users who want to maintain the factory character of the engine and avoid compromises typical of randomly selected replacements.