BMW 1 3 5 E82 E90 E91 E92 F10 F11 LCI Petrol N55 Hot-Film Air Mass Meter Sensor

The BMW 1 3 5 E82 E90 E91 E92 F10 F11 LCI Petrol N55 Air Flow Meter is an original intake system component from the Air and Fuel Intake Sensors group, designed for BMW N55 petrol engines. Precise measurement of the mass of ingested air ensures stable engine operation, correct fuel delivery, and predictable throttle response. This is a solution for users who expect proven, factory engine performance without compromise.

Specifications and technical data

• SKU: 7593624
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7593624
• Substitutable numbers: 13627593624, 7593624, 5WK97512, EM
• Fuel type: Petrol
• Category: Air Intake & Fuel Sensors

Application and Role in the Intake System

The air flow meter in the N55 petrol engine is responsible for the accurate measurement of the amount of air drawn into the intake manifold. Based on this data, the engine control unit determines the fuel dose, ignition timing, and accessory operating strategy, which translates to:

• stable idle speed,
• smooth acceleration without jerking,
• maintenance of factory performance and running culture,
• control of fuel consumption under typical road conditions.

In turbocharged engines, such as the N55, a properly functioning air flow meter is particularly important for maintaining adequate boost pressure and protecting the engine from an incorrect mixture.

Compatibility with BMW Models

The offered air flow meter is designed to work with selected BMW 1, 3, and 5 series models, including E82, E90, E91, E92, and F10 and F11 LCI versions with the N55 petrol engine. This makes it a functionally matched component of the intake system, allowing for the preservation of factory engine operating parameters in vehicles of this generation.

The component belongs to the Air and Fuel Intake Sensors group, meaning it works directly with other sensors and control elements responsible for preparing the fuel-air mixture.

Technical Characteristics and Benefits of Use

The air flow meter for N55 petrol units operates based on precise air flow measurement, adapted to the specifics of direct injection engines. Using this component allows for:

• maintaining the correct mixture composition across the full load range,
• reducing the risk of intake system error lights illuminating,
• maintaining proper cooperation with the factory engine control unit software,
• consistent operation with the fuel and ignition systems.

The product is designed for engines powered by petrol fuel, ensuring compatibility with the N55 unit's operating characteristics and its air measurement requirements.

Component Condition and Installation Aspects

The offered air flow meter is a part from the aftermarket, allowing for an economical replacement while maintaining original construction and fit for the factory BMW intake system. Installation is carried out in the location designated by the vehicle manufacturer, using standard mounting points and connections.

Before installation, it is recommended to verify the tightness of the intake hoses and the condition of the air filter to ensure stable operating conditions for the air flow meter and extend its lifespan.

Integration with the Fuel System and Diagnostics

A functional air flow meter has a direct impact on the fuel system's operation – from fuel delivery to long-term corrections in the engine control unit. In cases of symptoms such as increased fuel consumption, uneven idling, or power loss, diagnostics often include checking the signal from the air flow meter.

To better understand the relationships between air measurement and the operation of injectors and fuel pumps, it is worth familiarizing yourself with the educational material: Fuel System – Injectors, Pumps, and Fuel Tank: Maintenance and Repair. This will help organize knowledge on diagnostics and selecting parts by OEM numbers.

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 air temperature sensors, boost pressure measurement elements, or additional intake-related sensors, check the available parts in the BMW Air and Fuel Intake Sensors category.