Mercedes W204 W246 W176 W212 Coolant Expansion Tank Cap Cover A2105010615

The Mercedes W204 W246 W176 W212 Expansion Tank Cap is an original cooling system component from the Mercedes group, designed for use in popular compact and mid-size class models. As a part from the Caps category, the cap ensures proper sealing of the expansion tank, stabilizing coolant operating parameters and supporting safe engine operation.

Specifications and technical data

• SKU: A2105010615
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2105010615
• Substitutable numbers: A2105010615, A 210 501 06 15
• Category: Caps

Purpose and Compatibility

The presented expansion tank cap has been designed for vehicles in the Mercedes W204, W246, W176, and W212 series. This means it is compatible with popular C-Class, B-Class, A-Class, and E-Class constructions where maintaining stable pressure in the cooling system is crucial.

Thanks to its factory origin from the Mercedes line, the cap maintains the correct thread geometry and sealing surfaces, which translates to a secure fit on the expansion tank and reduced risk of leaks.

Technical Characteristics of the Expansion Tank Cap

As a component from the Caps group, the cap serves a sealing and protective function in the cooling system. The design intended by the manufacturer includes:

• appropriately selected sealing for the connection to the expansion tank,
• stable maintenance of coolant operating pressure,
• resistance to typical thermal loads encountered in the engine bay,
• compatible shape and mounting method for the indicated body series.

A cap configured in this way supports the correct operation of the cooling system, which is important for both the durability of the engine unit and the comfort of using the vehicle.

Condition of the Part and Service Application

The offered expansion tank cap is a used part, originating from the original Mercedes cooling system. This type of component is particularly useful in situations where the existing cap shows signs of wear, such as leaks, closure problems, or visible mechanical damage.

Replacing the cap is one of the simpler service actions, and it can significantly reduce the risk of engine overheating, coolant loss, or the appearance of errors related to operating temperature. Using an original part from the Mercedes range ensures structural consistency of the entire system.

Benefits of Choosing an Original Mercedes Cap

By choosing this expansion tank cap model, you gain:

• factory fitment for the indicated body series,
• consistency with other cooling system components,
• a reasonable repair cost compared to the potential consequences of engine overheating,
• the possibility of quick replacement without interfering with other components.

This is a practical solution for users who want to restore the correct operation of their cooling system by using original Mercedes components.

Other Mercedes Caps and Service Tips

If you are also looking for other Mercedes Caps compatible with your model, check out our dedicated category: Mercedes Caps. There you will find a wide selection of body and equipment elements that will allow you to comprehensively supplement or refresh your vehicle.

For those interested in optimizing repair costs while maintaining high-quality parts, we also recommend the advisory article: how to save on original car parts by using the used component market. This is a practical source of knowledge on how to plan servicing and parts selection to make car ownership more economical.