BMW F21 F22 F23 F30 F31 F32 Coolant Feed Pipe Hose Line N55 Petrol 8602578

BMW F21 F22 F23 F30 F31 F32 N55 Petrol Coolant Hose is an original part from the Cooling System Hoses and Pipes group, designed for BMW models with an N55 petrol engine. This used OEM component ensures proper coolant flow, stabilizing the engine's operating temperature and supporting safe vehicle operation.

Specifications and technical data

• SKU: 8602578
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8602578
• Substitutable numbers: 8602578, 11538602578
• Fuel type: Petrol
• Part type: Hose
• Category: Coolant Hoses

Purpose and Function in the Cooling System

The coolant hose is responsible for the controlled flow of fluid between the cooling system components in the N55 petrol engine. A correctly selected and sealed hose:

• maintains a stable coolant circulation throughout the system,
• reduces the risk of engine overheating,
• prevents fluid leaks that could lead to a drop in cooling efficiency,
• supports uniform heat dissipation from the engine block and accessories.

Thanks to its precise fit for specific generations of BMW 1, 2, 3, and 4 Series with petrol engines, the hose maintains the correct routing geometry and compatibility with factory spigots and connectors.

Compatibility with N55 Engine BMW Models

This part is designed for BMW F-series vehicles equipped with the N55 engine powered by petrol. This ensures compatibility with the factory cooling system design, including spigot placement, connection diameters, and fluid flow characteristics.

Selecting a hose dedicated to a specific engine type minimizes the risk of stress, twisting, or leaks resulting from improper installation. This is particularly important in modern turbocharged engines where the cooling system operates under increased thermal load.

Characteristics of a Used OEM Part

The offered hose is a salvaged part and is classified as a used OEM component. In practice, this means:

• preservation of factory-specified fitment parameters for the BMW cooling system,
• compatibility with original mounting points and clamps,
• the possibility of installation as a replacement for a damaged or leaking hose without the need for system modifications.

Choosing an original hose from the aftermarket is a cost-effective solution while maintaining the correct geometry and rigidity of the hose, which is crucial for the long-term sealing of the system.

Benefits of Replacing the Coolant Hose

Regular inspection and, if necessary, replacement of cooling system hoses are crucial for protecting the N55 engine. Using a correctly selected coolant hose:

• reduces the risk of engine failure due to overheating,
• limits the possibility of sudden coolant loss while driving,
• supports the uniform operation of the thermostat and radiator,
• allows for maintaining a stable operating temperature in both urban and highway conditions.

This is especially important in turbocharged vehicles, where the thermal load is higher and the cooling system operates under more demanding conditions.

Technical Support and Guide Materials

To better understand how operating conditions affect the cooling system, it is worth consulting our guide on system operation in high temperatures – check out the article Summer Heat vs. Cooling System: Used Radiators and Fans Guarantee Savings, where we discuss practical aspects of selecting and operating cooling components.

If you are planning a comprehensive repair or upgrade of the cooling system area in your BMW and need other parts from the same group, such as additional pipes, hoses, or fluid connectors, check out the available parts in the BMW Cooling System Hoses and Pipes category.