BMW E60 E60N E61 LCI Engine Radiator Coolant Hose Pipe 520d N47 7799749

BMW E60 E60N E61 LCI Engine Radiator Coolant Hose Pipe is a cooling system component designed for facelifted BMW 5 Series models, responsible for reliable and stable coolant routing. Thanks to its factory geometry and precise fitment for the specific body generation, it ensures proper coolant circulation and a correct connection between engine components. This used OEM part is a sensible choice for cooling system maintenance when you prioritize original design and installation compatibility.

Specifications and technical data

• SKU: 7799749
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 17127799749
• Substitutable numbers: 17127799749, 7799749
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

The presented water hose belongs to the Cooling system hoses and pipes category, meaning it is responsible for transporting coolant between engine components and accessories. A properly selected hose:

• maintains the tightness of connections in the cooling system,
• ensures stable coolant flow under varying engine loads,
• reduces the risk of engine overheating,
• maintains the correct routing geometry within the engine bay.

Thanks to its fitment for the specific facelifted (LCI) BMW 5 Series generation, the hose works with the factory layout of connectors and mounts, which facilitates service and eliminates the need for modifications.

Benefits of using an original BMW hose

Choosing an original used BMW water hose allows you to maintain structural consistency of the cooling system without the need to resort to aftermarket replacements with uncertain geometry. The OEM component:

• is designed for specific BMW E60/E61 LCI models,
• retains factory connection diameters and routing in the engine bay,
• minimizes the risk of leaks resulting from poor fitment,
• facilitates installation for mechanics familiar with standard BMW solutions.

As a result, this water hose is a practical solution for maintenance repairs, where it is crucial to quickly restore the cooling system's efficiency while adhering to the manufacturer's original concept.

Condition, installation, and service application

The offered hose comes from the used parts segment, making it an attractive cost-effective alternative for repairing older BMW 5 Series vehicles. This type of component is particularly useful in situations where:

• the existing hose has cracked, delaminated, or suffered from material aging,
• coolant leaks occur near hose connections,
• it is necessary to replace several cooling system components during a single service.

The hose is ready for installation in place of the factory part, maintaining the original routing and mounting points, which promotes efficient and predictable service replacement.

Technical support and knowledge about the cooling system

To better understand the impact of water hoses on engine durability and the symptoms of overheating, it is worth checking out the guide on cooling system diagnostics and service – it is discussed in detail in the article Engine cooling system – overheating, repair, and used radiators. There, you will find practical tips on how to assess the condition of components such as hoses, pipes, and radiators, and when their replacement is particularly recommended.

Expanding your BMW cooling system service

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