Bleed Hose Mercedes W205 Coolant Expansion Tank To Radiator Line A2055017601

The Mercedes W205 Coolant Expansion Tank Bleeder Hose is an original cooling system component designed for precise air bleeding from the expansion tank. Thanks to its factory geometry and fit for the W205 platform, it ensures stable cooling system operation and safe engine thermal conditions, which translates to its durability and reliability.

Specifications and technical data

• SKU: A2055017601
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2055017601
• Substitutable numbers: A2055017601, A 205 501 76 01
• Category: Coolant Hoses

Function and Role in the Cooling System

The bleeder hose in a Mercedes cooling system is responsible for the controlled release of air bubbles from the expansion tank, reducing the risk of airlocks. A properly functioning hose helps maintain stable pressure in the circuit, improves coolant circulation, and supports uniform engine cooling.

Using an original hose in W205 vehicles minimizes the risk of leaks, improper routing in the engine bay, and unwanted stresses that often occur with aftermarket parts of different geometry.

Construction and Fit for Mercedes W205

The hose has been specifically designed for the cooling system in the Mercedes W205 class, taking into account factory hose routing, mounting points, and distances from heat-generating components. This ensures:

• maintenance of the correct flow cross-section along its entire length,
• resistance to typical engine vibrations and movements,
• reduced risk of rubbing against other components in the engine bay.

Being an original Mercedes part means compliance with the manufacturer's factory quality standards, which is particularly important in a critical area like the cooling system.

Practical Benefits of Using the Original Hose

Using this hose in your W205 allows for proper cooling system bleeding after repairs, fluid changes, or replacement of components such as the radiator or expansion tank. Key benefits include:

• stable cooling system operation under engine load,
• reduced risk of overheating caused by air in the circuit,
• easier diagnostics and servicing due to maintaining factory hose routing.

This part is particularly recommended for comprehensive servicing when other cooling system components are being replaced, to avoid the recurrence of problems related to leaks or air ingress.

Condition and Service Application

The offered hose belongs to the Cooling System Hoses and Pipes group and is intended for users who expect factory fitment and predictable performance. It is suitable for both routine repairs and planned preventative maintenance, aiming to restore the cooling system to near-factory parameters.

If you are planning a comprehensive repair or upgrade of the cooling system area in your Mercedes and need other parts from the same group, such as return pipes, main hoses, or flexible connectors to the radiator, check the available parts in the Mercedes Cooling System Hoses and Pipes category.

Technical Support and Cooling System Knowledge

To better understand the impact of a healthy cooling system on engine longevity and the importance of proper bleeding, it is worth reading the guide: Engine Cooling System – Overheating, Repair, and Used Radiators. This will allow you to consciously plan your service and select the appropriate components for your car.