BMW E81 E87 E90 E91 Radiator Pack Fan Petrol 400W Automatic 7523259

BMW E81 E87 E90 E91 Radiator Pack Fan Petrol 400W Automatic is a cooling system component designed for BMW vehicles with petrol engines and automatic transmissions. It ensures stable heat dissipation from the radiator, which translates into a safe operating temperature for the power unit and predictable vehicle behavior in city traffic and under higher loads.

Specifications and technical data

• SKU: 7523259-3
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7523259
• Substitutable numbers: 17117590699, 7590699, 17117562079, 7562079, 64539229022, 9229022, 17427523259, 7523259, 17117542199, 7542199, 64509169791, 9169791
• Fuel type: Petrol
• Gearbox type: Automatic
• Category: Radiators

Purpose and function in the cooling system

The radiator fan in E81, E87, E90, and E91 series models is responsible for forced airflow through the radiator core, especially in conditions of limited airflow, such as driving in traffic jams or maneuvering in the city. A properly functioning fan stabilizes the coolant temperature, reduces the risk of overheating, and supports the smooth operation of the petrol engine.

In vehicles with an automatic transmission, maintaining the correct temperature in the engine compartment is of additional importance, as it affects the operating conditions of the equipment and components interacting with the gearbox. An efficient radiator fan helps maintain predictable operating parameters for the entire drivetrain.

Compatibility and technical specifications

The presented fan has been designed for use in BMW cars from the E81, E87, E90, and E91 family, equipped with petrol engines and an automatic transmission. The precise structural fit to the E-platform guarantees correct positioning relative to the radiator, proper airflow guidance, and compatibility with factory mounting points.

The component belongs to the Water radiators group, which means it works directly with the engine heat dissipation system. Using an original BMW reference allows for maintaining factory airflow parameters, and thus maintaining the power unit's operating characteristics in accordance with the manufacturer's specifications.

Characteristics of the used component

The fan comes from the secondary market, which means it is a used part that retains the functionality required for further operation. This type of component is a reasonable choice when servicing older generations of BMW, allowing for the maintenance of cooling system efficiency at controlled repair costs.

Choosing a used radiator fan is particularly beneficial when you want to maintain the original BMW design without having to resort to aftermarket replacements with uncertain airflow parameters. This allows you to maintain the consistency of the cooling system with other factory components.

The importance of a properly functioning fan

An efficient radiator fan has a direct impact on:

• maintaining a stable operating temperature of the petrol engine,
• reducing the risk of overheating in city traffic and while idling,
• driving comfort thanks to the predictable operation of the power unit,
• the service life of components interacting with the cooling system.

In the event of the first signs of malfunction – such as frequent temperature fluctuations or loud operation in the radiator area – replacing the fan with a functional unit is one of the key service steps.

Technical support and additional information

To better understand the impact of the fan and the entire cooling system on the durability of the power unit, it is worth reading the guide on diagnostics and repair of cooling systems, available in the article Engine cooling system – overheating, repair, and used radiators. You will find practical tips there on how to react to signs of overheating and how to plan service work.

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 a radiator core, fan shroud, or additional cooling hoses, check out the available parts in the BMW Water radiators category.