BMW 3 Series F30 LCI 330e B48X Coolant Expansion Tank Bottle 8617048

BMW 3 Series F30 LCI 330e B48X Coolant Expansion Tank Bottle is an original cooling system component from the Expansion tanks category, designed for use in BMW 3 Series F30 LCI models. It is a practical solution for users seeking factory-fit quality, stable cooling system operation, and compliance with the design requirements of the 330e B48X version.

Specifications and technical data

• SKU: 8617048
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8617048
• Substitutable numbers: 17138617048, 8617048, EM
• Category: Expansion & Overflow Tanks

Technical specifications and intended use

The presented expansion tank is a cooling system component designed specifically for the BMW 3 Series F30 LCI in the 330e B48X version. The design, adapted to factory mounts and hoses, allows for the maintenance of proper coolant circulation and stable system pressure, which is crucial for the durability of the engine and its accessories.

Its original BMW origin ensures precise fitment with other engine bay components, reduces the risk of leaks, and facilitates installation without the need for modifications. This is particularly important in the case of the 330e hybrid version, where the cooling system operates under complex service conditions.

Benefits of using an original expansion tank

Using a dedicated expansion tank in the BMW 3 Series F30 LCI 330e B48X translates into a number of practical advantages:

• factory fitment for the cooling system of the specific engine version,
• maintenance of the operating parameters specified by the manufacturer,
• reduced risk of issues with bleeding and maintaining the correct coolant level,
• easier diagnosis of potential leaks due to the predictable design.

For the user, this means more predictable operation and the ability to maintain the vehicle in a configuration close to factory specifications, which is beneficial both in terms of durability and the potential resale value of the vehicle.

Condition of the part and service application

The offered expansion tank is a used part, making it an attractive cost-effective alternative to new parts while maintaining original BMW specifications. This type of component works well for routine repairs, preventive replacements, and restoring cooling system efficiency after a failure.

Due to its factory origin, the tank can be used both as a direct replacement for a damaged part and as part of broader service work involving the cooling system in the BMW 3 Series F30 LCI 330e B48X.

Selection and compatibility within the BMW range

The item has a dedicated OEM part number and associated interchangeable numbers, which facilitates clear identification in BMW catalogs and service systems. Before purchasing, it is worth comparing the markings with the vehicle documentation or consulting a mechanic to confirm compatibility with the specific car configuration.

This approach minimizes the risk of selecting the wrong tank and allows for maintaining the integrity of the entire cooling system, which is especially important in vehicles operated intensively or in varied temperature conditions.

Expanding the BMW cooling system – related components

If you are planning a comprehensive repair or upgrade of the engine area in your BMW and need other elements from the same group, such as additional tanks, mounting elements, or related cooling system components, check the available parts in the BMW Expansion tanks category.

Expert support and project development

When planning broader modifications or upgrades to your car, including cooling system optimization in sports and hybrid models, expert materials regarding the use of original and used components can be helpful. In this context, it is worth reading the article MINI John Cooper Works – what makes it stand out and how to improve your MINI?, which shows how to consciously select used parts for projects focused on improving performance and durability.