BMW Mini Cooper R55 R56 R57 LCI R58 R59 N47N Water Pipe Coolant Hose 7811780

BMW Mini Cooper R55 R56 R57 LCI R58 R59 N47N Water Pipe Coolant Hose is an original cooling system component designed for facelifted Mini models, which allows for maintaining a stable engine operating temperature. Thanks to its factory fitment for a specific Mini generation, it ensures a secure connection of cooling hoses and the tightness of the entire circuit. This used component from the Clamps and mounting parts category is a sensible choice for cooling system maintenance when functionality and compliance with the original design are key.

Specifications and technical data

• SKU: 7811780-1
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7811780
• Substitutable numbers: 17127811780, 7811780
• Category: Clamps & Hardware

Purpose and function of the coolant hose

The coolant hose in Mini Cooper R55, R56, and R57 LCI models is responsible for the safe transport of coolant between key system components, such as the radiator and the engine. A properly selected hose minimizes the risk of leaks, engine overheating, and a drop in cooling efficiency. The design, tailored to the specific Mini platform, guarantees proper routing of the hose in the engine bay without colliding with other components.

Construction and installation in the cooling system

The element belongs to the Clamps and mounting parts group, which means it works with factory clamps, brackets, and mounting points provided by the manufacturer. As a result, installation is orderly, and the hose remains securely fixed even under changes in thermal load and pressure in the cooling system. The properly shaped cross-section and geometry of the hose help maintain proper fluid flow and reduce stress at connection points.

Benefits of using an original Mini hose

Using an original Mini coolant hose instead of a worn-out part allows for maintaining factory cooling system performance parameters and compliance with service documentation. This is particularly important for units operating under variable load conditions, where a stable engine temperature translates into the durability of other components. A used OEM component is also a cost-effective solution while maintaining proper fitment for the specific body and engine version.

Condition and service application

The offered coolant hose is a used item, intended for further operation after proper installation and a system leak test. It will work well both for a typical replacement of a worn hose and for larger cooling system service tasks, such as replacing the radiator, thermostat, or coolant. Choosing an original component reduces the risk of fitment issues that often arise with aftermarket parts featuring universal geometry.

If you are planning a comprehensive repair or upgrade of the cooling system area in your Mini and need other elements from the same group, such as clamps, mounting brackets, or additional assembly parts, check the available parts in the Mini Clamps and mounting parts category.

How to consciously choose used cooling system components

When selecting a used coolant hose, it is worth paying attention to compatibility with the specific model version and the condition of the working surfaces at the connection points. Practical tips on evaluating used components and reference numbers, described in more detail in the guide, may be helpful: how to professionally select used car parts, saving time and nerves. For components working with the drivetrain and cooling system, it is also worth reading the material on diagnostics and selection of drivetrain components: Second-hand differential – what you need to know about used differentials, sensors, and drivetrain systems.

Summary

BMW Mini Cooper R55 R56 R57 LCI R58 R59 N47N Water Pipe Coolant Hose is a practical choice for Mini users who want to restore the proper operation of the cooling system while maintaining factory fitment. An original, used component from the Clamps and mounting parts group supports stable engine operating temperature, reduces the risk of leaks, and facilitates installation thanks to compatibility with factory mounting points.