Mercedes W204 W212 Radiator Engine Cooling Fan Motor Blower 850W A2129061002

Mercedes W204 W212 Radiator Engine Cooling Fan Motor Blower 850W is an original component from the Fans and fan shrouds group, designed for the engine cooling system. The 850W power output ensures stable, efficient radiator support, which translates into a safe engine operating temperature in demanding road conditions.

Specifications and technical data

• SKU: A2129061002-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2129061002
• Substitutable numbers: A2129061002, A 212 906 10 02
• Part type: Fan & Shroud Assembly
• Category: Fan & Shroud Assemblies

Purpose and function in the cooling system

The radiator fan motor in Mercedes C-Class W204 and E-Class W212 models is responsible for actively forcing airflow through the radiator core, especially during city driving, idling in traffic jams, and under high engine loads. A properly functioning component of this type:

• stabilizes coolant temperature at low vehicle speeds,
• supports the operation of the thermostat and temperature sensors,
• reduces the risk of engine overheating,
• positively affects the durability of seals, the cylinder head, and engine accessories. Thanks to the appropriately selected 850W power, the fan is able to effectively dissipate heat even under heavy load, which is important both in city driving and on the highway.

Construction and performance parameters

The presented radiator fan motor is a design developed by the manufacturer for full integration with the factory Mercedes cooling system. This means it is matched in terms of:

• mounting geometry for the fan frame and front support beam,
• the type of electrical power supply used,
• rotational characteristics and starting torque,
• compatibility with the factory fan control system. A component configured in this way allows for maintaining factory airflow parameters through the radiator, which is crucial for maintaining stable thermal conditions in the engine compartment.

Benefits of using an original fan motor

Using an original fan motor in a Mercedes W204 or W212 provides a number of practical operational benefits:

• Full mounting compatibility – no need for modifications to the electrical installation or mounting brackets.
• Predictable operating characteristics – the fan switches on and off according to the vehicle manufacturer's specifications.
• Stable cooling across a wide range of ambient temperatures – essential when driving with a load or towing a trailer.
• Reduction of failure risks resulting from overheating – less stress on seals, engine oil, and aluminum components. Choosing such a component is particularly beneficial for cooling system repairs when the goal is to maintain factory operating parameters and the consistency of the entire system.

Condition characteristics and practical application

The offered fan motor comes from a vehicle where it was previously in use, which allows for an economical restoration of the cooling system's efficiency while maintaining the manufacturer's original specifications. This type of component is a good choice in situations where:

• the existing fan has suffered mechanical or electrical damage,
• there are problems with engine overheating in city traffic,
• it is necessary to replace the complete fan assembly, and the motor is the key drive component,
• the priority is to maintain the factory design of the Mercedes cooling system. By maintaining the original design concept, you can count on predictable vehicle behavior in various road conditions and consistency with other cooling system components.

Expanding the cooling system in your Mercedes

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other components from the same group, such as additional fans, complete modules with shrouds, or airflow guide covers, check the available parts in the Mercedes Fans and fan shrouds category.