Mercedes V177 Engine Coolant Hose Return Line Pipe A2478307002

Mercedes V177 Engine Coolant Hose Return Line Pipe is an original cooling system component from the Hoses, pipes and lines group, designed for precise coolant routing. This used OEM part ensures factory-fit installation in Mercedes vehicles, which facilitates assembly and reduces the risk of leaks in the cooling system.

Specifications and technical data

• SKU: A2478307002
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2478307002
• Substitutable numbers: A2478307002, A 247 830 70 02
• Category: Hoses, Lines & Pipes

Purpose and function in the cooling system

The described coolant hose is responsible for a stable connection of cooling system components in the V177 body style, enabling efficient fluid flow between the radiator and other components. The design, tailored to the specific Mercedes platform, allows for proper hose routing in the engine bay, minimizing stress and the risk of rubbing against other components.

By maintaining the original geometry and connection diameters, the hose supports the correct operating pressure in the cooling system, which translates into a stable engine operating temperature and reduces the risk of engine overheating in both city and highway driving conditions.

Benefits of using an original Mercedes hose

Using an original coolant hose in a Mercedes V177 provides a number of practical service and operational benefits:

• factory fit for mounts and connectors in the cooling system,
• properly selected material flexibility, facilitating installation and vibration compensation,
• maintaining proper coolant routing within the engine bay,
• reducing the risk of leaks resulting from poorly fitted aftermarket replacements.

For workshops and individual users, this means shorter installation time, fewer potential corrections, and greater predictability of the cooling system's performance after replacing the component.

Characteristics of the used component

The coolant hose offered in this listing comes from the Hoses, pipes and lines category and is a used part, which is a cost-effective solution while maintaining the manufacturer's original specifications. This type of component is particularly useful for accident repairs, replacing damaged hoses after engine overheating, or during comprehensive cooling system service, where maintaining compliance with the factory design is essential.

A used OEM hose is a sensible choice wherever a combination of correct operating parameters and repair budget control is important, without the need to resort to replacements of uncertain quality.

Technical support and additional information

Before purchasing, it is worth comparing the shape and type of hose connections with the element currently installed in the vehicle to confirm full installation compatibility. In case of doubt, it will also be helpful to verify the part number in the service documentation or the manufacturer's catalog, which will help avoid mistakes when selecting the component for a specific engine version in the V177 body.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other elements from the same group, such as additional coolant lines, flexible hoses, or rigid pipes carrying coolant, check the available parts in the Mercedes hoses, pipes and lines category.

To deepen your knowledge about operating the cooling system at high temperatures and how to economically use used components, it is worth reading the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which discusses practical aspects of selecting and servicing cooling components in passenger cars.