Coolant Water Hose BMW X3 F97 X4 F98 Expansion Tank Pipe Line 8073447

Coolant Water Hose BMW X3 F97 X4 F98 Expansion Tank Pipe Line is an original BMW cooling system component, designed for the precise routing of coolant between the expansion tank and the rest of the system. This used component from the Cooling system hoses and pipes category allows for a technically correct repair without interfering with the vehicle's design. It is a solution for drivers who want to maintain the factory geometry of the system and stable engine operating parameters.

Specifications and technical data

• SKU: 8073447
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8073447
• Substitutable numbers: 8073447
• Category: Coolant Hoses

Function in the BMW X3 F97 / X4 F98 cooling system

This hose serves as a dedicated line connecting the expansion tank to other cooling system components in the BMW X3 F97 and BMW X4 F98. It is responsible for the controlled flow of coolant, which supports:

• maintaining a stable engine operating temperature,
• proper venting of the cooling system,
• uniform circulation of fluid throughout the entire circuit.

Thanks to its factory fit, the hose maintains the correct diameter and shape, which reduces the risk of local flow restrictions and unwanted stress during engine operation.

Advantages of using an original BMW hose

Using an original coolant hose in the BMW X3 F97 / X4 F98 provides a number of practical operational benefits. The most important include:

• Factory geometry – the hose is matched to the serial routing in the engine bay, which facilitates installation and minimizes the risk of rubbing against other components.
• Cooling system compatibility – compatibility with original connectors, clamps, and mounts is maintained, with no need for modifications.
• Stable system operation – proper coolant flow supports even heat dissipation from the engine, which is particularly important under higher loads.

For users who prioritize technically correct repairs, choosing an original hose from this group is a reasonable compromise between quality and service costs.

Purpose and service application

The coolant hose from the expansion tank is primarily used for:

• replacing leaking or brittle hoses in the cooling system,
• repairs after engine overheating, when inspection and replacement of rubber components are recommended,
• preventive maintenance of the cooling system in vehicles operated in variable temperature conditions.

Selecting a hose consistent with the design of the BMW X3 F97 / X4 F98 reduces the risk of improper installation, and thus potential leaks or problems with system venting.

Component condition and installation aspects

The offered hose comes from dismantling and is classified as a used original BMW component. This type of part allows for an economical repair while maintaining the factory manufacturing standard. Before installation, a standard service procedure is recommended, including checking the tightness of connections and properly venting the cooling system after filling it with fresh fluid.

In practice, installation involves disconnecting the old hose, cleaning the connectors, and installing the new component using appropriate clamps, in accordance with the service procedure for BMW X3 F97 and X4 F98 models.

Cooling system maintenance expansion and additional materials

If you are planning a comprehensive repair or upgrade of the cooling system area in your BMW and need other components from the same group, such as additional hoses, return hoses, or supply lines, check the available parts in the BMW cooling system hoses and pipes category.

When working on the cooling system, it is worth considering the impact of high temperatures on component durability. Practical tips on operation and cost-effective repairs can be found in the guide "Summer heat vs. cooling system: used radiators and fans as a guarantee of savings", which discusses how to properly take care of the entire cooling system during the summer season.