BMW F10 F11 F12 F13 Radiator Fan Cooling Fan Shroud Housing 850W 8509743

BMW F10 F11 F12 F13 Radiator Fan Cooling Fan Shroud Housing is an original component from the Fans and fan shrouds group, designed to efficiently support the cooling system in BMW F-series models. This used OEM part ensures factory-fit, stable operation, and sufficient fan power reserve, which translates into a safe engine operating temperature even under heavy load. It is a solution for users looking for a technically verified component at a reasonable price.

Specifications and technical data

• SKU: 8509743
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8509743
• Substitutable numbers: 8509743, 17428509743, 7806017, 17427806017, 4578976, 17414578976, 7575564, 67327575564
• Category: Fan & Shroud Assemblies

Purpose and function of the radiator fan

The presented radiator fan is designed to work with the cooling system in the BMW F-series, including F10, F11, F12, and F13 body styles. Its task is to actively support airflow through the radiator, especially in urban conditions, while idling in traffic jams, and at high ambient temperatures. The 850W power rating ensures sufficient performance to maintain a stable coolant temperature across a wide range of engine loads.

Construction and performance parameters

The fan belongs to the Fans and fan shrouds group, meaning it is the component directly responsible for forced airflow through the radiator package. The OEM design ensures:

• proper fitment with the radiator frame and mounting elements,
• appropriately selected rotor diameter and blade geometry,
• optimized electric motor operating characteristics in terms of the vehicle's electrical system load.

As a result, the fan operates at the correct rotational speed, generating airflow tailored to the cooling system's requirements without excessive noise or unnecessary strain on the electrical installation.

Benefits of using an original BMW fan

Using an original radiator fan in a BMW F-series translates into a number of practical operational benefits:

• Stable engine operating temperature – properly selected fan performance reduces the risk of overheating in high ambient temperatures or during intensive driving.
• Factory fitment – no need for modifications to the installation, wiring, or mounts, which facilitates assembly and shortens service time.
• Consistency with vehicle electronics – the fan works with factory controllers, allowing for proper activation and speed regulation depending on load and temperature.
• Savings compared to a new part – a used OEM part allows for reduced repair costs while maintaining proper operating parameters.

Condition, selection, and practical application

The offered BMW radiator fan is a used component, which in practice means a favorable compromise between cost and functionality. When choosing such a component, it is worth paying attention to compatibility with the specific engine version and model year of the vehicle, as well as matching the existing electrical harness. This ensures that the installation proceeds smoothly and the cooling system regains full efficiency.

To facilitate selection, the product has assigned interchangeable numbers and an OEM part number, which allows for precise verification of compatibility with a specific BMW configuration. This information is particularly useful for workshops and users servicing their cars themselves.

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 additional fans, fan shrouds, or mounting frames, check the available parts in the BMW fans and fan shrouds category.

Operation in high temperatures and service knowledge

A functional radiator fan is crucial, especially in summer when the cooling system works under increased load. High ambient temperatures, driving in traffic jams, and frequent use of air conditioning mean that the engine requires more intensive cooling. In such conditions, an efficient fan with the appropriate power helps maintain stable engine operating parameters and reduces the risk of failures related to overheating.

If you want to better understand how high temperatures affect the cooling system and when it is worth choosing used radiators and fans, check out the guide "Summer heat vs. cooling system: used radiators and fans as a guarantee of savings", which will help you consciously plan the service of your BMW.