BMW X5 E70 Radiator Fan M57N2 N55 N57 Cooling Fan Shroud Housing 850W 7795757

The BMW X5 E70 N55 N57 850W Radiator Fan 8618242 is a high-performance cooling system component, specifically designed to work with the N55 and N57 engines in the X5 E70 model. The fan's rated power of 850W ensures efficient heat dissipation from the radiator, contributing to safe engine operation under various driving conditions. This is the ideal solution for users who value proven, factory-original construction over random aftermarket replacements.

Specifications and technical data

• SKU: 8618242
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8618242
• Substitutable numbers: 17428618242, 8618242, 17428508177, 8508177, 17427795757, 7795757, 17427647753, 7647753, 17427616104, 7616104, 17424730745, 4730745
• Tire profile: 65535
• Category: Fan & Shroud Assemblies

Intended Use and Compatibility

This fan belongs to the Fans and Fan Housings category and is dedicated to BMW X5 E70 models equipped with N55 and N57 engines. Its design has been developed to meet the specific requirements of these engines' cooling systems, ensuring proper airflow characteristics through the radiator and correct integration with the vehicle's electronics.

As an OEM component, this fan is optimized for:

• correct installation in factory mounting points,
• compatibility with the original engine control unit and body modules,
• maintaining optimal operating temperature across the entire load range.

Performance Parameters and 850W Characteristics

The 850W power output indicates that this fan is engineered for intensive operation under high thermal loads, typical for a heavy SUV like the BMW X5 E70. This characteristic allows for effective cooling in both city traffic and during high-speed driving or towing.

In practice, this means:

• stable coolant temperature maintenance in high ambient temperatures,
• efficient heat dissipation after dynamic acceleration and extended highway driving,
• enhanced protection of engine components against overheating.

Benefits of Using an Original BMW Fan

Using an original radiator fan for the BMW X5 E70 with N55/N57 engines offers primarily guaranteed structural fit and predictable performance within the cooling system. Compared to random aftermarket alternatives, the factory solution ensures:

• compliance with factory fan speed control parameters,
• appropriately selected blade diameter and geometry,
• maintenance of proper noise and vibration levels.

This is particularly crucial for modern N55 and N57 engines, where the cooling system interacts with numerous sensors and control modules. An incorrect fan can lead to diagnostic errors or improper engine operation.

Condition and Service Application

The offered component is used, allowing for an economical repair of the cooling system while maintaining the original BMW specifications. This is a particularly advantageous solution in cases of:

• electrical failure of the fan motor,
• mechanical damage to the fan blades or housing,
• the need for a quick replacement without investing in a new unit.

Prior to installation, a standard check of the electrical system and an inspection of the radiator and other cooling system components are recommended to fully leverage the potential of the installed fan.

BMW Fans and Fan Housings – Selection and Advice

If you are looking for other BMW Fans and Fan Housings tailored to specific models of this brand, please explore our dedicated category: BMW Fans and Fan Housings. Here you will find a wide selection of solutions for various series and generations, making it easier to choose the right component for your vehicle.

More About Cooling System Maintenance

When planning a fan replacement, it is advisable to consider the overall condition of the cooling system – including the radiator, hoses, thermostat, and the quality of the coolant. The impact of high temperatures on these components and the potential for savings with used parts are discussed in more detail in our guide: Summer Heat vs. Cooling System: Used Radiators and Fans for Guaranteed Savings. This provides practical knowledge for those who wish to service their BMW X5 E70 with informed decisions.