BMW E87 E90 E91 E92 Diesel Engine Cooling Radiator Fan 7801647

BMW 1 3 Series E87 E90 Diesel Engine Cooling Radiator Fan Housing Motor 600W is a complete housing with a radiator fan motor designed for the front of the engine bay in BMW 1 and 3 Series models with diesel engines. This component is responsible for stable engine cooling, ensuring proper system operating temperature and operational safety. This is an OEM solution that allows you to restore factory cooling parameters without the need for replacements with uncertain properties.

Specifications and technical data

• SKU: 7801647-6
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7801647
• Substitutable numbers: 17427801647, 7801647, 17427788907, 7788907, 17425A3F108, 4253108
• Location on the vehicle: Front
• Fuel type: Diesel
• Category: Caps

Purpose and Function in the Cooling System

The radiator fan housing is mounted in the front of the vehicle, directly next to the coolant radiator. In diesel-powered cars, it is responsible for forcing airflow through the radiator pack, which is particularly important during city driving, heavy engine load, and air conditioning operation. Using a dedicated fan assembly for BMW 1 Series E87 and 3 Series E90 allows for the correct cooling system operating characteristics, in line with the manufacturer's design. The fan motor's power of 600 W provides adequate performance reserve, allowing the cooling system to effectively respond to changes in the engine's thermal load. A properly functioning fan reduces the risk of overheating, supports the durability of seals, cylinder heads, and engine accessories, and also contributes to the stable operation of the air conditioning system.

Benefits of Using an Original Fan Assembly

Using an original fan housing with a motor in a diesel BMW translates into a number of practical benefits:

• maintaining factory cooling and fan control characteristics,
• proper fitment to the radiator and mounting elements in the front of the body,
• reducing the risk of incorrect installation typical of universal replacements,
• consistency with the vehicle's factory electronic control. This ensures that the cooling system operates under stable conditions, and the engine maintains optimal operating temperature, which promotes its durability and proper running culture. A properly selected radiator fan is particularly important for diesel engines, which generate high thermal loads during prolonged driving under load.

Assembly and Operational Characteristics

The presented fan assembly is structurally designed for installation in the front of the engine bay, in place of the original component. The arrangement of mounting points and the shape of the housing are adapted to the radiator layout and brackets in BMW 1 Series E87 and 3 Series E90 diesel models. This facilitates installation and reduces the time required for replacement during cooling system repairs. The product is a used part, meaning it is an original BMW component, not a replacement of unknown origin. For many users and workshops, this is the preferred solution as it maintains consistency with the vehicle's factory specifications while optimizing repair costs compared to purchasing a new part.

Application in Diesel Vehicles

The cooling system in BMW diesel engines requires an efficient, high-performance fan capable of dissipating heat during both highway driving and urban conditions. A dedicated radiator fan assembly for diesel versions is adapted to the specific thermal loads of these engines, which is important for the durability of the turbocharger, injection system, and accessory components. Replacing a worn or damaged fan with an original component with housing restores proper airflow through the radiator and air conditioning condenser. This, in turn, affects driving comfort, coolant temperature stability, and reduces the risk of failures due to overheating.

Why Choose a Used Original Part?

For critical components like a radiator fan, many drivers consider whether it's better to opt for refurbishment or a used original part. It's worth reviewing an analysis of this issue in the article Refurbished or Used Original – Which Part to Choose for Repairs?, which discusses the practical differences between these solutions using popular BMW components as examples. If you are planning a comprehensive repair or upgrade of the body area in your BMW and need other parts from the same group, such as covers, trims, or additional moldings, check the available parts in the BMW Trims category.