Coolant Hose BMW X3 G01 X4 G02 B48 B47D B57 B58 Battery 48V Cooling Line 8780520

The BMW X3 G01 / X4 G02 48V Battery Coolant Hose is an original cooling system component designed to work with B48, B47D, B57, and B58 units. Designed by BMW, this hose ensures stable heat dissipation from the 48V mild-hybrid system, supporting the safe operation of the battery and its accessories. This is a solution for users who expect factory fitment and predictable cooling system performance parameters.

Specifications and technical data

• SKU: 8780520
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 8780520
• Substitutable numbers: 8780520, 61218780520, 8597289, 17128597289
• Category: Coolant Hoses

Purpose and Function in the Cooling System

This hose belongs to the group of Cooling System Hoses and Pipes and is responsible for transporting coolant in the circuit dedicated to the 48V battery in BMW X3 G01 and X4 G02 models with B48, B47D, B57, and B58 engines. A correctly selected hose minimizes the risk of local overheating, supports temperature stability in the high-current circuit, and helps maintain the efficiency of the mild-hybrid system.

Thanks to its construction conforming to the manufacturer's design, the hose works with factory spigots, clamps, and other cooling system components, which reduces the need for modifications and facilitates servicing.

Benefits of Using an Original BMW Hose

Choosing an original 48V battery coolant hose for the BMW X3 G01 / X4 G02 offers a number of practical benefits:

• maintaining the factory routing geometry of the hose in the engine bay and near the 48V battery,
• compatibility with the cooling system designed for B48, B47D, B57, and B58 engines,
• material consistency with other BMW cooling system components,
• reducing the risk of leaks resulting from improper fitment of aftermarket alternatives.

A component configured in this way allows for maintaining stable thermal conditions in the 48V battery area, which is important for the longevity of the entire drive assist system.

Item Condition and Installation Aspects

The offered hose is a used part from disassembly, allowing for economical repair of the cooling system while maintaining the original BMW specification. Before installation, a standard visual inspection for leaks, material flexibility, and internal cleanliness is recommended, as well as the use of new hose clamps in accordance with the vehicle manufacturer's guidelines.

The hose is intended for installation in place of the factory component, which facilitates service work and reduces vehicle downtime. Maintaining the correct routing in the engine bay is crucial to avoid chafing and ensure free coolant flow.

Technical Support and Component Selection

To better understand the role of coolant hoses in protecting the powertrain and accessories, it is worth reading the guide on diagnosing and servicing cooling systems – a detailed discussion can be found in the article “Engine Cooling System – Overheating, Repair, and Used Radiators”. This will allow for a conscious approach to inspecting the entire cooling circuit, not just a single hose.

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 hoses or cooling lines, check the available parts in the BMW Cooling System Hoses and Pipes category.

Summary

The Coolant Hose BMW X3 G01 X4 G02 B48 B47D B57 B58 Battery 48V Cooling Line is an original 48V battery coolant hose, dedicated to modern BMW units with a mild-hybrid system. Using a factory component within the Cooling System Hoses and Pipes category helps maintain proper cooling system operating parameters, supports drive reliability, and facilitates servicing due to full compatibility with the vehicle's design.