Mercedes A209 Expansion Tank Upper Coolant Hose Pipe Line M272 A2095013982

Mercedes A209 Expansion Tank Upper Coolant Hose Pipe Line is an original cooling system component designed for the precise discharge of heated coolant in M272 series engines. Thanks to its factory geometry and fitment for Mercedes vehicles, the hose ensures stable operating conditions for the powertrain and reduces the risk of overheating. It is a practical solution for users who want to maintain the integrity of the cooling system according to factory specifications.

Specifications and technical data

• SKU: A2095013982
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2095013982
• Substitutable numbers: A2095013982, A 209 501 39 82
• Part type: Hose
• Category: Coolant Hoses

Purpose and function in the cooling system

The upper coolant hose in the M272 engine is responsible for transporting coolant between the radiator and the engine unit, operating under high-temperature and variable pressure conditions. A properly selected component from the Cooling system hoses and pipes group is crucial for maintaining a stable operating temperature, proper fluid circulation, and protecting the engine from overheating in both city traffic and highway driving.

The original design of the hose ensures proper routing in the engine bay, maintaining the required bending radii and mounting points. This minimizes the risk of rubbing against other components, excessive material stress, or leaks at the connections.

Benefits of using an original coolant hose

Using a factory hose instead of a worn-out or aftermarket replacement allows you to maintain cooling system performance parameters consistent with the manufacturer's design. The most important advantages include:

• maintaining proper coolant flow across the entire engine load range,
• proper fitment to the radiator and engine ports, which reduces the risk of leaks,
• stable hose routing in the engine bay, without collisions with other components,
• consistency with the factory Mercedes cooling system architecture.

For users who want to keep their car in a configuration close to the factory state, choosing such a component is a technically safe and predictable solution for operation.

Characteristics of the used component

The offered hose comes from dismantling and is a used component, which allows for lower repair costs while maintaining the manufacturer's original specifications. This type of part is a good choice in situations where you care about factory fitment while also wanting to optimize your service budget. Before installation, it is recommended to perform a standard inspection of the working surfaces, material flexibility, and clamp seats to ensure the cooling system operates in a predictable and leak-free manner after replacement.

Professional use in service and repairs

The upper coolant hose in the M272 engine is a component that is worth replacing during any major intervention in the cooling system, such as replacing the radiator, thermostat, or coolant. This helps reduce the risk of future failures resulting from natural rubber wear and material aging. In service practice, replacing the hose with an original Mercedes component facilitates installation, reduces mechanic labor time, and decreases the likelihood of needing corrections.

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 lines, return hoses, or short connecting sections, check out the available parts in the Mercedes cooling system hoses and pipes category.

Technical support and knowledge about the cooling system

When diagnosing engine operating temperature issues, it is worth looking at the cooling system as a whole – from the radiator and hoses to the flow control elements. To better understand the impact of individual components on engine longevity and symptoms of overheating, check out our guide: Engine cooling system – overheating, repair, and used radiators. This is a practical addition to your knowledge when planning repairs using original hoses and pipes in Mercedes cars.