BMW F01 F10 F11 F30 LCI Diesel N57N Hot-Film Air Mass Meter Sensor 7804150

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW F01 F10 F11 F30 LCI Diesel N57N Hot-Film Air Mass Meter Sensor is an original component from the Air and fuel intake sensors group, designed for BMW N57N diesel engines after the facelift (LCI). Precise measurement of the intake air mass ensures stable engine operation, correct fuel dosing, and predictable performance in daily use.

Specifications and technical data

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

Function of the air mass meter in the N57N diesel engine

The air mass meter in a diesel engine is responsible for accurately measuring the amount of air drawn into the intake manifold. Based on this data, the engine control unit (ECU) determines the fuel dosage, adjusts the turbocharging system operation, and manages the exhaust gas recirculation system. In N57N units, a properly functioning sensor translates into:

• stable idle speed and smooth engine operation,
• correct throttle response across the full load range,
• maintenance of the optimal air-fuel mixture for a diesel engine,
• reduced smoke emissions and improved overall engine refinement.

As a result, replacing a worn-out component with a functional air mass meter dedicated to the N57N allows for the restoration of factory intake system performance parameters.

Compatibility with facelifted (LCI) BMW models

The offered air mass meter is designed for selected facelifted BMW F-series models equipped with N57N family diesel engines. Using the correct sensor from this group ensures compliance with the factory engine control unit characteristics and avoids adaptation issues.

The component belongs to the Air and fuel intake sensors category, meaning it works directly with the intake and fuel systems, influencing injection dosage, turbocharger operation, and emission control systems.

Characteristics and advantages of the used OEM component

The air mass meter comes from the original BMW production line, ensuring it maintains factory measurement parameters and proper fitment within the intake housing. An original sensor from this group provides:

• electrical compatibility with the vehicle's wiring harness,
• correct integration with the engine control unit software,
• stable readings across the full air flow range,
• appropriate characteristics for diesel engines.

A used OEM component is an attractive cost-effective alternative to new aftermarket replacements, while maintaining the correct build quality and fitment. This solution is particularly beneficial for maintenance repairs where the balance between price and performance is key.

Application in the intake and fuel system

As a part from the Air and fuel intake sensors group, the air mass meter works with the air filter, intake ducts, and the injection system. Proper operation of this sensor has a direct impact on:

• the operation of the injection system in a diesel engine,
• boost strategy and turbocharger protection,
• the operation of emission control systems,
• fuel consumption under typical road conditions.

In the event of symptoms such as power loss, increased fuel consumption, or air flow-related errors, replacing the air mass meter with a functional unit dedicated to the N57N is one of the primary diagnostic and repair steps.

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

Used electronics and sensors – what to look for?

When choosing a used air mass meter, it is worth paying attention to compatibility with the fuel type, engine generation, and the facelifted body version. It is also important to perform the installation while maintaining cleanliness in the intake system and to seat the sensor correctly in the housing, which minimizes the risk of measurement interference.

If you want to better understand when choosing used modules and sensors makes sense and how to safely select such components, read our guide The second life of electronics – when is it worth choosing used engine ECUs, comfort modules, and parking sensors?, where you will find practical tips on using automotive electronics from the secondary market.