BMW E38 E39 Mini One D R50 W17 Additional Water Pump 8381989

BMW E38 E39 Mini One D R50 W17 Additional Water Pump is an original cooling system component from the Water pumps category, designed for precise coolant circulation in BMW vehicles. Thanks to its OEM-compliant design, it ensures stable engine operating parameters and supports the maintenance of optimal temperatures under various operating conditions.

Specifications and technical data

• SKU: 8381989
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8381989
• Substitutable numbers: 64118381989, 8381989, 64110304850, 0304850
• Category: Water Pumps

Purpose and function of the additional water pump

The additional water pump in Mini R50 W17 models is responsible for supporting the main cooling circuit, especially in situations of increased thermal load on the engine. It maintains coolant flow in critical areas, which promotes stable engine operation and reduces the risk of localized overheating.

This component works with the factory BMW cooling system, ensuring proper pressure and direction of medium flow. As a result, the cooling system maintains its efficiency even during extended city driving, idling, or in high ambient temperature conditions.

Benefits of using an original BMW pump

Using an original additional water pump dedicated to the Mini R50 W17 allows for maintaining the factory cooling system performance parameters. A design compliant with the vehicle manufacturer's requirements translates into:

• proper cooperation with the existing cooling and control installation,
• correct fitment of connections and mounts,
• preservation of the coolant flow characteristics specified by the manufacturer.

Thanks to this, the installation process is straightforward, without the need for system modifications, and the cooling system regains its design efficiency. This is a particularly beneficial solution when diagnosing overheating problems or insufficient fluid circulation.

Component condition and installation aspects

The offered additional water pump is a used item from the Water pumps category, which allows for economical repair while maintaining the original BMW part specification. Before installation, it is recommended to perform a standard check of the cooling system for leaks, inspect the hoses, and properly bleed the system after refilling with fresh coolant.

In workshop practice, the installation of this type of pump comes down to correctly connecting the ports and electrical connectors, in accordance with the service documentation for the specific model. Proper seating in the brackets and the elimination of stress on the hoses reduce the risk of subsequent leaks.

Selection by numbers and integration with the vehicle system

The component has a dedicated OEM part number and associated interchangeable numbers, which facilitates precise identification and selection for a specific Mini R50 W17 configuration. Verifying compatibility using the vehicle manufacturer's numbers helps avoid installation issues and ensures full compatibility with the cooling system.

For users and workshops, this means the ability to plan repairs consciously, without the need to use replacements with uncertain parameters. The original design also promotes predictable system behavior over the long term of operation.

Expanding the BMW cooling system – related parts

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 pump bodies, housings, or additional circulation modules, check out the available parts in the BMW Water pumps category.

Technical support and service knowledge

When planning service work, it is worth using reliable sources of knowledge regarding fuel systems and their associated components. Practical information on diagnostics, selection by OEM numbers, and operating principles can be found in the article "Fuel system – injectors, pumps, and fuel tank: maintenance and regeneration", which organizes many issues related to the operation of modern vehicle systems.