Radiator BMW F20 F21 F30 F31 N20 N55 Engine Cooling Coolant Radiator 7618807

Visual condition of the part

The product shows signs of use visible in the photos.

Radiator BMW F20 F21 F30 F31 N20 N55 Engine Cooling Coolant Radiator is an original coolant radiator from the Water radiators group, designed for installation in the front section of BMW F-series vehicles equipped with N20 and N55 engines. This component is responsible for stable heat dissipation from the power unit, which translates into safe engine operation and reduces the risk of overheating during daily use.

Specifications and technical data

• SKU: 7618807-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7618807
• Substitutable numbers: 17118672104, 8672104, 17117618807, 7618807
• Location on the vehicle: Front
• Category: Radiators

Purpose and function in the cooling system

The presented radiator has been designed for modern BMW N20 and N55 petrol engines used in the 1 Series F20/F21 and 3 Series F30/F31 models. Its task is to effectively dissipate heat from the coolant circulating between the engine and the heat exchanger located at the front of the vehicle. As a result, the cooling system maintains a stable operating temperature, which promotes the durability of the power unit and the proper operation of auxiliary equipment.

Its placement at the front of the car ensures optimal airflow while driving, and thus efficient discharge of excess thermal energy. In practice, this translates into predictable temperature behavior even under higher engine loads, e.g., during highway driving or in urban conditions with frequent stops.

Construction and fitment for BMW F-series

The radiator belongs to the group of factory BMW components, which means it maintains the correct geometry, mounting points, and connections intended for the F20, F21, F30, and F31 platforms. Consequently, installation proceeds in an orderly manner, without the need for modifying brackets or adjusting connectors. Proper fitment to the front-end structure facilitates correct positioning of the radiator relative to the fan and other cooling system components.

Original manufacturing also promotes the tightness of connections with coolant hoses and compatibility with factory covers and air ducts. This is important both from the point of view of durability and the stability of thermal parameters over a long period of use.

Benefits of using an original BMW radiator

Using a factory radiator in a BMW F-series cooling system brings a number of practical benefits:

• maintaining the engine heat dissipation efficiency designed by the manufacturer,
• secure fitment to the vehicle's front structure, without the need for modifying load-bearing elements,
• compatibility with standard hoses, sensors, and cooling system accessories,
• consistency with the factory concept of airflow through the front end.

For the user, this means predictable operating temperature behavior, reduced risk of leaks, and easier diagnostics of potential faults in the future. In the case of replacing a worn or damaged radiator with an original element from the Water radiators group, the risk of problems resulting from inaccurate fitment of aftermarket parts is also minimized.

Characteristics of the used component

The offered radiator is a used item, which in practice means it comes from vehicle dismantling and has been verified for suitability for further use. Such components are often chosen for post-accident repairs or servicing older BMW models, where it is important to combine reasonable costs with maintaining the original technical specification. A used radiator allows you to restore the efficiency of the cooling system without having to resort to cheaper, but less structurally predictable, aftermarket replacements.

Choosing such a solution is particularly beneficial for vehicles used intensively, where both functionality and compliance with the manufacturer's factory concept are important. This allows you to keep the vehicle in good technical condition while maintaining control over repair costs.

Technical support and additional materials

Before installation, it is worth verifying the compatibility of the radiator with the specific engine and body version using the manufacturer's markings and catalog data. If necessary, it may be helpful to compare the design with the currently installed component, especially regarding connections and mounting points. For users who want to better understand the impact of the cooling system on the durability of the power unit, an article describing typical symptoms of overheating and the importance of a functional radiator will be useful – details can be found in the material Engine cooling system – overheating, repair, and used radiators.

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 heat exchangers, coolant hoses, or expansion tanks, check the available parts in the BMW water radiators category.