Mercedes-Benz E-Class W211 Expansion Tank Coolant Hose Pipe A2115000372

Mercedes-Benz E-Class W211 Expansion Tank Coolant Hose Pipe is an original cooling system component designed for the precise delivery and return of coolant between the expansion tank and other system components. This used part from the Mercedes range allows for maintaining the factory operating characteristics of the cooling system and proper fluid circulation within the engine. It is a solution for users who expect compatibility with the W211 design and wish to keep the vehicle in line with the manufacturer's specifications.

Specifications and technical data

• SKU: A2115000372
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2115000372
• Substitutable numbers: A2115000372, A 211 500 03 72, BG
• Offset (ET):
• Category: Cooling Plates

Purpose and function in the cooling system

The expansion tank hose in the E-Class W211 model is responsible for a stable connection between the tank and the rest of the cooling system, which enables controlled compensation of fluid volume during engine temperature fluctuations. A properly selected component ensures:

• maintaining the correct coolant level in the tank,
• safe discharge of excess fluid,
• reducing the risk of air locks in the system,
• preserving the factory operating parameters of the power unit.

Thanks to the use of an original solution from the Mercedes family, the hose geometry and fitment to the connectors and mounts in the W211 engine bay are preserved.

Compatibility and fitment for Mercedes-Benz E-Class W211

This hose has been designed specifically for the E-Class W211 platform, which translates into proper routing in the engine bay, as well as the correct length and connection diameter. Such fitment minimizes stress on the connectors, reduces the risk of micro-cracks, and facilitates installation without the need to modify other cooling system components.

Using an original part from the Cooling Plates category allows for maintaining the consistency of the entire cooling system, which is particularly important in premium vehicles where thermal stability of the engine affects the durability of accessories and operational comfort.

Characteristics of the used part

The item is offered as a used part, meaning it comes from disassembly but retains the functionality required for further operation. This type of component is a good choice in situations where:

• a quick replacement of a damaged cooling system hose is necessary,
• maintaining the original installation specification is important,
• optimizing repair costs while adhering to factory solutions is a priority.

A used cooling system hose can be particularly useful in vehicles used intensively, where technical efficiency and proper system operation are the priority, rather than exclusively installing new components.

Benefits of using an original coolant hose

Using an original expansion tank hose in a Mercedes-Benz E-Class W211 provides a number of practical benefits:

• Factory fitment – compatibility with the mounting system and connectors in the engine bay, without the need for modifications.
• Stable cooling system operation – proper coolant flow and maintenance of the correct operating pressure.
• Consistency with other system components – the hose works with the radiator, thermostat, and expansion tank in accordance with the manufacturer's design.

For users who want to take extra care of the durability of disassembled components, a guide on the operation and maintenance of such parts may be helpful – detailed tips can be found in the article How to extend the life of used car parts?.

Expansion and service of the Mercedes cooling system

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 hoses, flow channels, or additional heat dissipation components, check out the available parts in the Mercedes Cooling Plates category.