BMW F01 F02 F10 F30 LCI Diesel N57N Hot-Film Air Mass Meter Sensor 7804150

BMW F01 F02 F10 F30 LCI Diesel N57N Hot-Film Air Mass Meter Sensor is a component from the Air and fuel intake sensors group, designed for BMW diesel engines with the N57N unit. It is responsible for the precise measurement of the intake air volume, which allows the engine control unit to properly dose fuel and ensures stable operation of the powertrain. This is a solution for users looking for a proven, original component for the intake system in a modern BMW diesel.

Specifications and technical data

• SKU: 7804150-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7804150
• Substitutable numbers: 13627804150, 7804150
• Fuel type: Diesel
• Part type: Sensor
• Category: Air Intake & Fuel Sensors

The role of the air mass meter in the N57N Diesel engine

In BMW diesel engines from the N57N family, precise control of the air-fuel mixture is crucial. The air mass meter measures the mass of air drawn through the intake system and then transmits this data to the engine control unit. Based on this, the ECU selects the fuel dose, injection timing, and auxiliary equipment operating strategy, which translates into smooth engine operation, proper dynamics, and reduced exhaust smoke. A properly selected air mass meter in a Diesel engine helps maintain stable idle speed, improves throttle response, and supports the maintenance of factory emission parameters. In the case of symptoms such as power loss, jerking, or increased fuel consumption, checking and potentially replacing this sensor is one of the basic diagnostic steps.

Compatibility with BMW F01, F02, F10, F30 LCI models

The offered air mass meter is intended for selected BMW F-series models, including luxury limousines and popular mid-size models after the LCI facelift. As a result, it can be used in both comfort-oriented vehicles and more dynamic configurations, maintaining full integration with the factory engine control system. The element comes from the BMW range, which means maintaining the correct measurement characteristics, electrical compatibility, and proper fitment to the standard air filter housing and intake ducts. This is particularly important in modern diesel units, where even small deviations in air mass readings can affect engine refinement and performance.

Characteristics of the used sensor

The air mass meter offered in this listing is an aftermarket component in Used condition. This means it has been removed from a vehicle, and its design and connectors are consistent with factory BMW solutions. This type of component is a good choice for users who want to restore the proper operation of the intake system while maintaining a reasonable cost level. When installing a used air mass meter, it is recommended to:

• check the tightness of the intake ducts and the air filter housing,
• inspect the condition of the electrical connector and wiring harness,
• perform an adaptation or reset of learned values in the engine control unit (if required by the service procedure). Such an approach allows you to fully utilize the sensor's potential and reduce the risk of recurring errors related to air mass measurement.

Application area – intake and air supply system

The air mass meter from the Air and fuel intake sensors group operates in the immediate vicinity of the air filter, in a critical location of the intake system. Its proper operation affects:

• the accuracy of the fuel dose across the entire rev range,
• proper cooperation with the turbocharger and exhaust gas recirculation system,
• engine stability under variable loads. By maintaining the factory measurement characteristics, it is possible to maintain predictable vehicle behavior, which is important both in daily use and during long highway trips.

How to consciously choose used electronics and sensors

When selecting a used air mass meter for a BMW, it is worth paying attention to compatibility with the specific engine version and vehicle year, as well as the mounting method and connector type. Additional support can be provided by diagnostic procedures and reading error codes from the onboard computer, which help confirm that the air mass sensor is indeed the source of the problem. If you want to learn more about when it is worth using used electronic components in a car, how to assess their condition, and what to pay attention to during installation, check out the guide: The second life of electronics – when is it worth choosing used engine controllers, comfort modules, and parking sensors? For even more precise component matching to a specific BMW vehicle, the VIN number and specialized parts catalogs can be helpful. If you want to learn practical tips on selecting original parts for premium cars, check out the article: How to select original used parts for BMW, Audi, and Mercedes using the VIN number? 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 boost pressure sensors, air temperature sensors, or other measuring components in the intake system, check out the available parts in the BMW Air and fuel intake sensors category.