Coolant Bottle Mercedes W205 W232 W257 W447 Expansion Tank A2225000549

Coolant Bottle Mercedes W205 W232 W257 W447 Expansion Tank is a factory-original cooling system component, designed for precise compatibility with Mercedes engines in the listed body generations. This component from the Expansion tanks category ensures stable operating conditions for the coolant, which translates into a safe engine temperature and predictable vehicle performance under various operating conditions.

Specifications and technical data

• SKU: A2225000549
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2225000549
• Substitutable numbers: A2225000549, A 222 500 05 49
• Category: Expansion & Overflow Tanks

Purpose and function in the cooling system

The expansion tank in a Mercedes cooling system is responsible for compensating for changes in fluid volume as the engine heats up and cools down. A properly selected component:

• stabilizes pressure in the cooling system,
• allows for easy coolant level monitoring,
• reduces the risk of engine overheating,
• supports even heat dissipation from the engine.

Thanks to a design that meets manufacturer requirements, the tank works with factory hoses, connectors, and mounts, which facilitates installation and subsequent maintenance.

Compatibility with Mercedes models

The presented component has been designed for Mercedes W205, W232, W257, and W447 class vehicles, which ensures a perfect fit for the engine bay architecture of these generations. The appropriate body shape and connection layout allow for:

• maintaining the original routing of coolant hoses,
• proper positioning of the tank relative to the radiator and engine,
• hassle-free service access for coolant level checks.

The original Mercedes origin helps maintain factory cooling system performance parameters and minimizes the risk of leaks resulting from imprecise fitment.

Characteristics of the used component

The offered tank comes from the secondary market, making it an economical solution while maintaining a design consistent with the factory specifications. The used component allows for:

• reducing cooling system repair costs,
• maintaining the original manufacturer's specifications,
• easy matching to existing brackets and hoses.

Before installation, it is recommended to perform a standard leak test and check the condition of the connectors and ports to ensure trouble-free operation after replacement.

Benefits of using an original expansion tank

Choosing an original expansion tank for a Mercedes translates into a number of practical benefits:

• Factory fit – compatibility with the vehicle's design without the need for modifications.
• Stable cooling system operation – proper circulation and coolant volume compensation.
• Operational safety – reducing the risk of engine overheating with proper maintenance.

This solution is particularly recommended for repairs of vehicles used intensively, where the cooling system operates under increased thermal load.

Cooling system expansion in a Mercedes

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 tanks, mounting elements, or related system components, check the available parts in the Mercedes expansion tanks category.

For vehicle owners interested in a broader approach to modifications and the selection of used components, practical tips regarding legal and technically correct upgrades may be useful – you can find them in the article Second-hand Mini John Cooper Works Pro sports exhaust – a legal way to get a racing sound and +7 HP, which discusses key aspects of selecting and installing secondary market components.