Filling Hose Mercedes W204 C207 Coolant Expansion Tank Pipe Line A2045017182

Filling Hose Mercedes W204 C207 Coolant Expansion Tank Pipe Line is an original cooling system component from the Hoses, pipes and lines group, designed for use in Mercedes vehicles. This used component allows for a technically correct replacement of a damaged water hose, ensuring stable coolant flow and safe engine operation.

Specifications and technical data

• SKU: A2045017182
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2045017182
• Substitutable numbers: A2045017182, A 204 501 71 82
• Category: Hoses, Lines & Pipes

Purpose and function of the water hose

The water hose / pipe is responsible for transporting coolant between cooling system components, such as the engine block, radiator, or heater core. A properly selected hose minimizes the risk of leaks, engine overheating, and performance drops in the system.

This component is particularly important in vehicles operated in varying temperature conditions, where the cooling system works under variable loads and requires a stable, leak-proof connection for all sections of the coolant circuit.

Advantages of using an original Mercedes hose

Choosing a water hose from Mercedes primarily ensures:

• maintaining the factory routing geometry of the hose in the engine bay,
• proper fitment of connection diameters to the cooling system ports,
• compatibility with factory clamps and mounts,
• reduction of the risk of hose stress and twisting during installation.

As a result, installation is efficient, and the cooling system maintains performance close to factory specifications, which translates into stable engine operating temperature and predictable vehicle behavior in city traffic and on the highway.

Product characteristics and condition

The offered hose belongs to the Hoses, pipes and lines category, meaning it is a component responsible for routing the working medium in the vehicle's system. The product is used, which means it comes from disassembly, and its construction retains the characteristics typical of original components installed at the factory in Mercedes cars.

This type of part is a good solution when the existing hose has suffered mechanical damage, cracking, delamination, or shows signs of leakage at the connections. Replacing it with an original used component allows you to maintain system integrity without the need to use aftermarket replacements with uncertain parameters.

Installation and maintenance tips

When replacing a water hose in a Mercedes vehicle, it is worth paying attention to several technical aspects:

• inspecting the condition of the ports and sockets to which the hose is connected,
• verifying the condition of clamps and retaining bands for wear,
• properly bleeding the cooling system after installation,
• checking for leaks after the engine reaches operating temperature.

This approach reduces the risk of recurring leaks and allows for longer, trouble-free operation of the cooling system after the component replacement.

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 flexible water hoses, rigid guide pipes, or additional connecting sections, check out the available parts in the Mercedes Hoses, pipes and lines category.

If you want to expand your knowledge on the selection and operation of engine system components and are considering using used parts, it is worth reading the article EGR: what it is and why it is worth considering used EGR valves, which discusses the practical aspects of using parts from the secondary market.