BMW 1 3 Series F20 F21 F30 F31 LCI B48 Radiator Fan Housing 400W 8625439

BMW 1 3 Series F20 F21 F30 F31 LCI B48 Radiator Fan Housing 400W is an original radiator fan motor housing from the Fan and Blower Motors category, designed for BMW 1 and 3 Series F-generation models with the LCI facelift and B48 engine unit. This solution is created to BMW factory standards, ensuring proper cooling of the powertrain and stable operation of the fan assembly.

Specifications and technical data

• SKU: 8625439
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8625439
• Substitutable numbers: 17428625439, 8625439, EM
• Category: Fan Motors

Purpose and compatibility

The presented radiator fan motor housing is designed for BMW 1 Series F20/F21 and 3 Series F30/F31 models after the LCI facelift, equipped with a B48 family petrol engine. The design is matched to the factory cooling system, which allows for maintaining proper airflow through the radiator and other thermal components in the engine bay.

The housing works with a 400W electric fan motor, which is important when selecting a replacement part – this guarantees adequate cooling performance in urban and highway conditions, as well as under higher engine loads.

Construction and technical function

The element plays a key load-bearing role for the fan motor and rotor, stabilizing their position relative to the radiator and other cooling system components. The designed geometry of the housing directs the airflow in a way optimized for efficiency, reducing flow losses and operating noise.

Thanks to the factory BMW design, the following are maintained:

• precise mounting points to the radiator frame and body,
• proper routing of wires and electrical connectors for the fan motor,
• stability of the entire assembly at high rotational speeds.

Such a solution promotes uniform cooling of the B48 engine, which translates into maintaining the correct operating temperature and reducing the risk of overheating in demanding operating conditions.

Benefits of using an original fan housing

Using an original fan housing in a BMW 1 and 3 Series F-generation allows for maintaining the structural integrity of the entire cooling system. Factory fitment eliminates the need for modifications, and installation is based on existing mounting points, which shortens service time and reduces the risk of assembly errors.

The main advantages of this solution include:

• stable fan operation under full cooling system load,
• preservation of the airflow characteristics designed by BMW,
• compatibility with factory equipment without additional adapters.

An element from the Fan and Blower Motors category of this type is particularly recommended when replacing a damaged housing after a collision, mechanical failure, or wear and tear, when it is essential to restore the original cooling parameters.

Characteristics of the used product

The offered housing comes from dismantling, which means it is a used part, but one that retains the functionality required for further operation. In practice, this allows for an economical repair of the cooling system while using an original BMW component, designed exactly for a given body type and engine unit.

Before installation, it is recommended to perform a standard verification of the condition of mounts, sockets, and surfaces interacting with the radiator and equipment to ensure proper fitment and no stress in the system. Selecting parts by OEM number and interchangeable numbers allows you to ensure that the housing will work properly with the existing fan motor and vehicle installation.

Technical support and additional materials

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 fan housings, fan motors, or complete fan assemblies, check the available parts in the BMW Fan and Blower Motors category.

When selecting components for the powertrain – especially engines and gearboxes – an expert guide describing facts and myths about second-hand parts, procedures for selection by VIN and OEM, and cost analysis will be helpful: Why it is worth buying used gearboxes and engines – facts instead of myths.

To better understand the importance of original BMW components in the context of safety and durability, it is also worth reading the material discussing the advantages of OEM parts: Quality assurance and OEM safety – why used original car parts are the best choice for your car.