BMW 5 Series F10 F11 N57 Coolant Hose Pipe 7800104 11537800104

BMW F10 F11 N57 Radiator Hose is an original cooling system component designed for BMW models with the N57 engine, ensuring stable heat dissipation from the power unit. Thanks to its factory geometry and appropriately selected hose diameter, it guarantees correct coolant flow and a leak-proof connection to the radiator and engine outlets. This solution is dedicated to users who expect precise fitment and compliance with factory specifications.

Specifications and technical data

• SKU: 7800104
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 7800104
• Substitutable numbers: 11537800104, 7800104, EM
• Category: Other Engine Parts

Purpose and Function in the Cooling System

The radiator hose in a BMW with an N57 engine is responsible for transporting coolant between the key components of the system, maintaining the stable operating temperature of the power unit. A properly shaped hose minimizes the risk of kinks, flow restriction, and localized overheating, which directly impacts the durability of the engine and its ancillaries.

By using an original BMW radiator hose, you maintain the factory flow characteristics, which is particularly important in modern diesel engines like the N57, operating under significant thermal load.

Compatibility and Fitment

The presented component has been specifically designed for the BMW F10/F11 platform with the N57 engine, which translates to:

• precise fitment to factory mounting points and outlets,
• correct routing of the hose in the engine bay,
• maintaining the appropriate bending radius without the risk of kinking.

This ensures a predictable installation process, without the need for modifications or additional adapters. Factory geometry also reduces the risk of rubbing against other ancillary components, which is important for long-term operation.

Characteristics of the Used Component

The offered BMW F10 F11 N57 radiator hose is a used part from disassembly, meaning it is a pre-owned component but retains the functionality required for further use. Such components are often chosen as an economical alternative to new hoses, especially for routine repairs or restoring a vehicle's functionality after a cooling system failure.

By choosing a used original part, you gain the advantage of factory fitment and materials selected by the manufacturer, which in practice often performs better than cheaper aftermarket alternatives with uncertain specifications.

Installation and Service Recommendations

When installing the radiator hose in a BMW F10/F11 with an N57 engine, it is worth paying attention to several technical aspects:

• checking the condition of the hose clamps and replacing them with new ones if necessary,
• thoroughly cleaning the radiator and engine outlets before fitting the hose,
• correctly positioning the hose in the factory guides and brackets,
• bleeding the cooling system after filling it with fresh coolant.

This approach minimizes the risk of leaks and allows you to fully utilize the potential offered by an original cooling system hose.

Related Components and Technical Knowledge

If, during cooling system maintenance, you are also analyzing the impact of engine and ancillary modifications on thermal load, information about design differences in high-performance units may be useful. In this context, it is worth familiarizing yourself with material discussing sports versions of powertrains, such as the comparison of Audi RS with other models in terms of engine, brakes, and chassis, which shows how manufacturers design auxiliary systems for more heavily loaded units.

If, during work on the cooling system, you are planning a parallel inspection of brakes or other key components, a practical guide on selecting used components may be helpful, such as the comprehensive guide to purchasing used brake system components, which facilitates the assessment of the technical condition of second-hand parts.

If you are looking for other body, engine ancillary, or cooling system components for your BMW, and you want to stick with original disassembled solutions, check the available parts in the Other BMW category.