Mini Cooper D R55 R56 LCI R58 Diesel N47N Coolant Water Hose Pipe 7811782

Mini Cooper D R55 R56 LCI R58 Diesel N47N Coolant Water Hose Pipe is a component from the Cooling system hoses and pipes group, designed for MINI diesel engines with the N47N unit after the facelift (LCI). It is responsible for the efficient circulation of coolant within the system, which directly impacts the stable operating temperature of the diesel engine and its operational safety.

Specifications and technical data

• SKU: 7811782
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 7811782
• Substitutable numbers: 7811782, 17127811782, 64509184102, 9184102, 64509119701, 9119701, 64536982874, 6982874, 64536911946, 6911946
• Fuel type: Diesel
• Category: Coolant Hoses

Purpose and function in the cooling system

The offered water pipe is designed to work with the N47N diesel engine in MINI R55, R56, and R57 series models after the facelift. As a cooling system component, it is responsible for the controlled flow of fluid between sub-assemblies, which reduces the risk of engine overheating and supports even thermal load distribution.

A properly selected water hose:

• ensures stable coolant circulation in the diesel engine,
• minimizes pressure drops in the cooling system,
• helps maintain the optimal operating temperature under various driving conditions.

Technical characteristics and fitment

The pipe belongs to the Cooling system hoses and pipes group, meaning it has been constructed to operate in a high-temperature environment and in contact with coolant. Thanks to its factory fitment for the MINI R55/R56/R57 LCI platform with the N47N diesel engine, the component maintains the correct geometry and mounting points, which facilitates installation and reduces the risk of stress within the system.

Its original Mini origin ensures compliance with the manufacturer's factory standards, as well as proper fitment with other cooling system components, such as the radiator, connectors, or thermostat housings.

Condition of the component and benefits of choosing a used part

The offered water pipe is in Used condition, meaning it has been removed from a vehicle and was previously in operation. In practice, this allows for an economical repair of the cooling system while maintaining the original manufacturer's specifications, which is particularly important for precisely engineered MINI diesel engines.

Choosing a used water pipe for a MINI:

• reduces service costs while maintaining factory fitment,
• allows for maintaining the consistency of the cooling system with original components,
• is an environmentally friendly solution (reuse of parts).

The importance of a functional pipe in a diesel engine

MINI diesel engines from the N47N family operate under high thermal loads, which is why a functional water pipe is crucial for protecting the unit from overheating. Leaks, reduced flow, or deformations of the pipe can lead to coolant loss, localized overheating, and accelerated wear of engine components.

To better understand the impact of the cooling system on engine durability and the symptoms of overheating, it is worth checking out the guide: Engine cooling system – overheating, repair, and used radiators.

Comprehensive MINI cooling system service

If you are planning a comprehensive repair or upgrade of the engine area in your MINI and need other elements from the same group, such as additional pipes, return hoses, or connecting sections to the radiator, check the available parts in the Mini cooling system hoses and pipes category.

When planning service, it is also worth considering the seasonal thermal loads on the engine and preparing the car for low temperatures by using the practical tips included in the article: Winter essentials: which used car parts are worth checking and replacing before the frost?.