BMW X1 E84 E90 E91 E92 E93 Radiator Cooling Fan 2.0 Diesel 5A3F108

BMW X1 E84 E90 E91 E92 E93 Radiator Cooling Fan 2.0 Diesel is an original component from the Fan and Blower Motors group, designed for the cooling system of BMW 2.0 diesel units. It ensures stable heat dissipation from the radiator, supporting safe engine operation across a wide range of loads and temperatures.

Specifications and technical data

• SKU: 5A3F108
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 5A3F108
• Substitutable numbers: 17425A3F108, 5A3F108, 17427801647, 7801647, 17427788907, 7788907, 3 135 103 595, 3135103595, 1 137 328 118, 1137328118
• Fuel type: Diesel
• Part type: Fan Motor
• Category: Fan Motors

Purpose and function in the cooling system

The radiator cooling fan in BMW X1 E84 and 3 Series E90, E91, E92, E93 models is responsible for forced airflow through the radiator, especially during city driving, in traffic jams, and under heavy engine load. In 2.0 Diesel versions, a properly functioning fan is crucial for maintaining a stable operating temperature, protecting against overheating, and reducing the risk of damage to seals, the cylinder head, or the turbocharger. The component in this group operates in an electronically controlled mode, responding to signals from temperature and load sensors, which allows for precise adjustment of the rotational speed to the current operating conditions of the powertrain.

Benefits of using an original BMW fan

Using an original radiator cooling fan in BMW X1 E84 and 3 Series E90–E93 cars with a diesel engine provides a number of practical benefits:

• maintenance of factory cooling parameters and stable engine operating temperature,
• proper cooperation with the vehicle's control electronics,
• accurate fitment to the radiator housing and mounting points in the engine bay,
• reduced risk of incorrect installation typical of aftermarket replacements with different shapes or diameters,
• maintenance of predictable cooling system performance under high-load conditions. By maintaining compliance with factory specifications, the cooling system remains balanced, which promotes a longer service life for the powertrain and auxiliary equipment.

Technical characteristics and compatibility

The presented fan belongs to the Fan and Blower Motors group, which means it is a complete drive unit responsible for generating airflow through the radiator. The design is adapted to the specifics of diesel engines, which generate higher thermal loads than gasoline units, especially during prolonged driving under heavy load or while towing. The selection of parts should always be verified by the OEM number or interchangeable numbers, taking into account the specific body version and engine configuration. This approach minimizes the risk of purchasing a component with a different rotor diameter, a different type of electrical connector, or a different mounting method.

Condition, installation, and operation

The offered fan comes from the used original parts segment, which allows for combining an attractive cost with the preservation of the factory design. Before installation, it is recommended to perform a standard check of the electrical system, fuses, and control unit to rule out other causes of cooling problems. During installation, it is worth paying attention to:

• proper seating of the fan relative to the radiator,
• ensuring the blades do not rub against covers or other components,
• secure connection of the electrical plug,
• verification of operation after starting the engine and reaching operating temperature. An installation performed in this manner promotes trouble-free operation and stable cooling system performance in daily use.

BMW Fan and Blower Motors – expansion and selection

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 fan drives, control modules, or complete assemblies with housings, check the available parts in the BMW Fan and Blower Motors category.

Expert support and OEM selection

When selecting components for the cooling system, engine, or auxiliary equipment, it is worth using reliable sources of information regarding used components. A detailed discussion of selection procedures based on OEM numbers, differences between versions, and economic aspects can be found in the article Why it is worth buying used gearboxes and engines – facts instead of myths, which organizes the most important information regarding the informed choice of used parts.