BMW F10 F11 LCI B47 Hose Cylinder Head Radiator 8571801

Visual condition of the part 

The product shows signs of use visible in the photos. 

BMW F10 F11 LCI B47 Hose Cylinder Head Radiator is an original cooling system component by BMW, designed for the precise drainage of coolant from the engine cylinder head area. This used hose from the Lines, hoses and pipes category allows for a technically correct repair without the need for aftermarket replacements with uncertain parameters.

Specifications and technical data

• SKU: 8571801
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8571801
• Substitutable numbers: 17128571801, 8571801, EM
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

The presented water hose has been designed specifically for the B47 unit in BMW 5 Series F10/F11 LCI models. Its task is to ensure stable coolant flow in the cylinder head area, which has a direct impact on maintaining the proper operating temperature of the engine and uniform heat dissipation.

Thanks to its factory geometry, the hose ensures:

• precise fit to the connectors and mounts in the engine bay,
• appropriate coolant flow cross-section,
• correct positioning relative to other engine components.

Advantages of using an original BMW hose

The original BMW cylinder head cooling hose guarantees that the factory design specifications of the cooling system are maintained. The properly selected flexibility and wall rigidity of the hose reduce the risk of vibrations, chafing, and leaks during long-term operation. This is particularly important in diesel engines, where thermal loads are significantly higher.

By using a part from the same product line as other cooling system components, you minimize the risk of issues with bleeding, pressure drops, or local overheating in the cylinder head area. This translates into stable operation of the B47 unit and reduces the risk of costly failures associated with overheating.

Condition, origin, and installation aspects

The hose is offered as a used part, which allows for an economical yet technically correct repair of the cooling system. The component comes from a dismantled BMW vehicle, thanks to which it retains the original design, shape, and mounting points intended by the manufacturer.

In practice, installation involves replacement within existing connectors and clamps, without the need for system modifications. With properly performed service (coolant replacement, system bleeding), the hose allows for restoring the correct circulation of coolant in the engine cylinder head area.

Operational safety and part selection

A properly selected cylinder head cooling hose is significant for the thermal safety of the engine. Maintaining tightness and proper coolant flow reduces the risk of overheating, power loss, or head gasket damage. By choosing an original BMW hose, you gain consistency with other system components and predictable behavior during long-term operation.

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 return lines, supply hoses, or bypass pipes, check the available parts in the BMW Lines, hoses and pipes category.

Technical support and additional knowledge

For extensive service work within the powertrain and cooling system, it is worth considering the characteristics of the entire drivetrain and thermal loads resulting from driving style. To deepen your knowledge on component selection in this area, you can use our guide material: Dismantled drive axles and differentials – how to choose gear ratios for your driving style.