BMW i4 G26 Water Hose Radiator Coolant Cooling Tube Pipe Line 8477901

The BMW i4 G26 Radiator Water Hose is an original cooling system component, designed specifically for i4 G26 series models. Thanks to its precise fit to the factory installation, it ensures stable coolant flow and proper heat dissipation from the engine and accessories. This is a practical solution for users who want to maintain the cooling system in efficient, safe, and predictable condition.

Specifications and technical data

• SKU: 8477901
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8477901
• Substitutable numbers: 8477901, 17128477901
• Category: Coolant Hoses

Purpose and Function in the Cooling System

The radiator water hose in the BMW i4 G26 is responsible for transporting coolant between the radiator and other system components. A correctly selected and sealed hose:

• maintains proper pressure in the cooling circuit,
• prevents localized overheating of the power unit,
• reduces the risk of coolant leaks,
• supports uniform heat dissipation from critical engine areas.

Thanks to its construction in line with the original BMW design, the hose maintains its shape under thermal and mechanical load, which translates to stable operation of the entire cooling system.

Original BMW Origin and Fitment

This part comes from the original BMW parts line, meaning full compliance with the manufacturer's factory standards. In practice, this translates to:

• precise fit to the connectors and mounting points in the engine bay,
• maintenance of the correct hose routing geometry,
• compatibility with factory clamps and mounting brackets.

This solution minimizes the need for modifications and allows for near plug-and-play installation, which is particularly important in modern designs like the BMW i4 G26.

Characteristics of the Used Hose

The hose is in used condition, making it an attractive cost alternative to a new OEM component. For many BMW users, this is a reasonable compromise between quality and budget, especially for routine cooling system repairs.

Choosing an original, used water hose allows for consistency with the vehicle's factory construction, avoiding problems typical of aftermarket parts of uncertain origin, such as imprecise fitment or different material characteristics.

Importance of a Functional Hose in the Cooling System

In modern vehicles like the BMW i4 G26, the cooling system operates under strictly defined temperature conditions. A leaky or deformed water hose can lead to:

• a drop in coolant level and engine overheating,
• improper operation of temperature-dependent accessories,
• secondary failures resulting from prolonged thermal overload.

Therefore, replacing a worn-out component with a factory-fitted radiator hose is a crucial step in any professional cooling system repair.

More About Cooling System Diagnostics and Operation

To better understand overheating symptoms, proper diagnostic procedures, and the impact of individual components on engine durability, it is worth reading the guide: Engine Cooling System – Overheating, Repair, and Used Radiators. This is a practical addition to your knowledge when planning repairs related to cooling hoses and pipes in BMW vehicles.

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