BMW X1 E81 E87 E90 E91 N47 Cooling Radiator Water Pipe Hose 7797259

BMW X1 E81 E87 E90 E91 N47 Cooling Radiator Water Pipe Hose is a component from the Cooling system hoses and pipes group, designed for operation in the coolant circuit of BMW vehicles. It is responsible for the stable routing of fluid between system components, which supports maintaining the correct engine operating temperature and reduces the risk of overheating.

Specifications and technical data

• SKU: 7796871
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7796871
• Substitutable numbers: 17127796871, 7796871, 17127797259, 7797259
• Category: Coolant Hoses

Purpose and function in the cooling system

The water pipe used in BMW E81 and E90 series models operates in the coolant circuit between the radiator and other system elements. A properly shaped pipe ensures:

• stable routing of the coolant flow,
• maintenance of system connection tightness,
• correct positioning relative to the engine and body, without collision with other components.

Thanks to this, the cooling system can operate predictably, and the engine maintains an optimal operating temperature range, which translates into its durability.

Benefits of using an original BMW pipe

Using a water pipe sourced from BMW allows for maintaining the factory geometry of fluid routing and proper fitment to connectors and mounts. This solution reduces the risk of stress, leaks, and improper flow. The original pipe design is engineered for specific power units and the engine bay, which facilitates installation and subsequent maintenance.

A component from this group is particularly important in vehicles operated in urban and highway conditions, where the cooling system works with high load variability. Selecting a pipe consistent with the factory design helps maintain stable engine operating parameters and reduces the risk of failures related to overheating.

Condition and service application

The offered pipe comes from the BMW range and is classified as a used part, which allows for an economical repair of the cooling system while maintaining the original assembly specifications. It is suitable both for replacing a damaged section of the installation and for the staged regeneration of the entire coolant circuit.

In workshop practice, such a component is used, among other things, for:

• eliminating leaks in the coolant circuit,
• replacing perished or mechanically damaged pipes,
• restoring the factory routing of the installation after previous modifications.

Selection by OEM number and interchangeable numbers

To precisely select the pipe for a specific BMW version, it is worth using the OEM part number and available interchangeable numbers. This data is visible in the technical specifications section and allows you to verify compatibility with your vehicle, which minimizes the risk of purchasing an incompatible part.

If you want to organize the process of selecting parts by manufacturer markings and reference numbers, a practical guide will be helpful: how to select the right car part by VIN and OEM number. You will find a step-by-step procedure and tips on how to effectively verify component compatibility there.

Cooling system and engine durability

A functional coolant pipe has a direct impact on the thermal safety of the power unit. Leaks, airlocks, or restricted flow can lead to overheating, and consequently, to expensive engine repairs. Therefore, whenever interfering with the coolant circuit, it is worth checking the condition of pipes, connectors, and mounts.

If you want to better understand how individual cooling system elements – including pipes, radiators, and additional heat exchangers – affect the lifespan of the power unit, check out the article: Engine cooling system – overheating, repair, and used radiators. This is a good supplement to your knowledge when planning service work on your BMW.

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