Mercedes W447 Expansion Tank Hose Cooler Cooling Pipe Line V-Class A4475013400

Mercedes W447 Expansion Tank Hose Cooler Cooling Pipe Line V-Class is a component from the Cooling system pipes and hoses group, designed for use in the cooling systems of Mercedes vehicles. It is responsible for a secure and stable connection between the expansion tank and other components, which helps maintain proper pressure and coolant circulation in the engine.

Specifications and technical data

• SKU: A4475013400
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4475013400
• Substitutable numbers: A4475013400, A 447 501 34 00, BG
• Category: Coolant Hoses

Function and application in the cooling system

The expansion tank hose in the Mercedes W447 operates in a critical area of the cooling system, responsible for transporting fluid between the tank and the rest of the installation. A properly selected hose helps maintain a stable engine operating temperature, reduces the risk of overheating, and supports even venting of the system.

The component from this group is designed for resistance to temperature changes, contact with coolant, and vibrations generated during driving. As a result, the cooling system remains leak-proof, and the engine can operate within the thermal range specified by the manufacturer.

Benefits of using an original Mercedes hose

Using a hose dedicated to a specific Mercedes platform translates into:

• Precise geometric fit to factory connectors and mounts in the engine bay.
• Reduced stress on connections, which lowers the risk of micro-cracks and coolant leaks.
• Stable cooling system operation under typical operating conditions.
• Easier installation without the need for modifications or fitting universal hose sections.

For the user, this means more predictable cooling system behavior and a lower risk of failures related to hose leaks.

Product characteristics and condition

The offered hose belongs to the Cooling system pipes and hoses category and comes from a Mercedes vehicle, which helps maintain compatibility with factory design solutions. The product is used, making it a reasonable choice for repairs where a balance between functionality and service cost control is important.

A hose of this type is suitable both for standard replacement of a worn-out component and for repairs following a cooling system failure, where it is necessary to restore the original installation routing. Proper positioning of the hose in the engine bay helps avoid rubbing against other components and localized overheating.

Installation and maintenance tips

When installing the expansion tank hose, it is worth paying attention to:

• checking the condition of clamps and connectors,
• proper hose routing according to the factory layout,
• checking for leaks after filling the system with coolant,
• re-verification after the engine has warmed up to operating temperature.

This approach helps reduce the risk of subsequent leaks and ensures stable cooling system operation over the long term of vehicle use.

More about the cooling system and part selection

For drivers who want to better understand the impact of pipes, hoses, and radiators on engine durability, a guide describing typical overheating symptoms and component selection principles will be useful. A detailed discussion can be found in the article Engine cooling system – overheating, repair, and used radiators, which shows how to properly care for this area of the vehicle.

If you are planning a comprehensive repair or upgrade of the cooling system area in your Mercedes and need other elements from the same group, such as additional pipes, hoses, or connections, check the available parts in the Mercedes cooling system pipes and hoses category.