Coolant Hose BMW F10 F11 Diesel N47N Water Cooling Pipe Radiator Line 7809818

Coolant Hose BMW F10 F11 Diesel N47N Water Cooling Pipe Radiator Line is an original cooling system component designed for BMW 5 Series F10/F11 diesel engines with the N47N unit. Thanks to its factory geometry and precise fit for the specific engine configuration, it ensures stable coolant flow and proper cooperation with other system components. It is a practical solution for users who want to maintain structural integrity of the cooling system in their vehicle.

Specifications and technical data

• SKU: 7809818-1
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7809818
• Substitutable numbers: 7809818, 17127809818
• Fuel type: Diesel
• Category: Coolant Hoses

Purpose and role in the cooling system

The presented hose belongs to the Cooling system hoses and pipes category, responsible for transporting coolant between key engine components and the radiator. For N47N diesel units in the BMW F10/F11, a correctly selected water hose is essential for:

• maintaining a stable operating temperature of the diesel engine,
• ensuring proper pressure within the coolant circuit,
• reducing the risk of overheating under high engine load.

Dedicated fitment for the specific series and engine type helps maintain factory cooling system performance parameters, which translates into predictability and operational safety.

Compatibility with the N47N diesel engine

In BMW diesel engine cooling systems, precise routing of hoses and their resistance to temperature fluctuations and vibrations are particularly important. The described hose has been designed specifically for the N47N diesel unit, which means:

• appropriate shape and length tailored to the F10/F11 engine bay layout,
• adaptation to the specific operating conditions of a diesel engine,
• maintaining the correct coolant flow direction relative to the connectors and housings.

As a result, installation is straightforward, without the need for modifying the hose routing or using additional adapters.

Characteristics of the used component

The offered cooling system hose is a used part, which allows for economical repair while maintaining the manufacturer's original specifications. In practice, this means the ability to restore proper coolant circulation without having to resort to aftermarket replacements with uncertain fitment. Choosing an original pre-owned component is particularly beneficial for models where compliance with the factory design and predictable material behavior over the long term are important.

The importance of a proper cooling system hose

A functional water hose in a BMW F10/F11 with an N47N engine has a direct impact on:

• maintaining the tightness of the coolant circuit,
• stabilizing the engine's operating temperature,
• reducing the risk of failures related to overheating or coolant loss.

Replacing a worn or leaking hose with a properly selected component allows for the restoration of correct cooling system operating conditions, which is important both in daily use and on longer trips.

Cooling system expansion and additional materials

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 hoses, return lines, or sections connecting the radiator to the engine, check out the available parts in the BMW cooling system hoses and pipes category.

To better understand how thermal conditions affect the durability of hoses and the entire cooling system, it is worth checking out our guide: Summer heat vs. cooling system: used radiators and fans as a guarantee of savings. You will find practical tips there regarding operation and component selection in high temperatures.