BMW 1 3 Series E81 E87 E90 E91 Diesel Radiator Cooling Pusher Fan 400W 7588974

The BMW E81 E87 E90 Radiator Fan Diesel 400W is an original cooling system component designed for BMW vehicles with diesel engines. The 400W unit provides stable cooling support, which is particularly important for urban driving and under heavy loads. A used OEM component is a sensible choice for drivers seeking a factory fit without the need to invest in a new part.

Specifications and technical data

• SKU: 8506668
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8506668
• Substitutable numbers: 17428506668, 8506668, 17427788906, 7788906, 7588974, PK, 17425A3F105, 4253105, 17427801993, 7801993, 17427788905, 7788905
• Fuel type: Diesel
• Category: Caps

Purpose and Function in the Cooling System

The presented radiator fan works with the cooling system in BMW E81, E87, and E90 models powered by diesel engines. Its task is to force airflow through the radiator, which stabilizes the coolant temperature under a wide range of engine operating conditions. The 400W power allows for efficient heat dissipation, both during stop-and-go traffic and during prolonged high-speed driving.

Benefits of Using an Original BMW Fan

Using an original fan in the BMW cooling system ensures:

• factory fit to mounts and shrouds in the engine bay,
• proper cooperation with the vehicle's control electronics,
• appropriately selected operating characteristics for diesel engines,
• stable maintenance of operating temperature under typical and elevated loads.

This ensures the cooling system operates predictably, and the risk of engine overheating is reduced. A used OEM part helps maintain the vehicle's original operating characteristics, which is particularly important for intensively used vehicles.

Technical Characteristics and Compatibility

The 400W radiator fan is specifically designed to work with BMW diesel engines. Appropriately selected performance, along with the design of the impeller and housing, ensures proper airflow while maintaining a controlled noise level. The component has dedicated part numbers and interchangeable numbers, which facilitates unambiguous identification and selection for a specific vehicle configuration.

The product belongs to the technical category of Covers, but in practice, it serves as an important element of the cooling system, responsible for supporting the radiator's operation in conditions of limited natural airflow.

Condition, Origin, and Practical Application

The offered fan is a used part from disassembly, allowing for economical repair of the cooling system while maintaining the original manufacturer's specifications. This type of solution is particularly beneficial for post-accident repairs, replacement after engine fan failure, or for upgrading the cooling system in intensively used vehicles.

Before installation, standard verification of the electrical system and connector condition is recommended to ensure proper cooperation with the vehicle's wiring and engine control unit. A correctly selected and functional radiator fan directly impacts the engine's durability and stable operation across a wide range of ambient temperatures.

Cooling System Expansion and Selection of Other Components

If you are planning comprehensive maintenance of your BMW's cooling system and need other parts from the BMW Covers category, check the available parts in the BMW Covers category.

For larger service or upgrade projects, it is worth familiarizing yourself with the principles of sourcing used components in one place – practical tips and an explanation of the benefits of the One-Stop-Shop approach can be found in the article Comprehensive Sourcing of Used Car Parts.