Mercedes W205 C300de Hybrid Water Coolant Pipe Hose Line A2055019100

The Mercedes W205 C300De Hybrid Coolant Hose is an original cooling system component designed for precise integration with the hybrid drivetrain of this model. Thanks to its factory geometry and fit to original spigots, the hose ensures stable coolant flow and supports maintaining optimal operating temperature of the powertrain. This solution helps preserve the integrity of the entire cooling system and reduces the risk of failures due to leaks or improper installation.

Specifications and technical data

• SKU: A2055019100
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2055019100
• Substitutable numbers: A2055019100, A 205 501 91 00
• Part type: Pipe
• Category: Coolant Hoses

Purpose and Function in the Cooling System

This hose belongs to the Cooling System Hoses and Pipes group, responsible for transporting coolant between key engine and ancillary components. In the C300De hybrid version, proper routing of the cooling medium is crucial not only for the internal combustion engine but also for components interacting with the electric drive.

The appropriately shaped cross-section and routing of the hose help maintain:

• stable coolant flow across various engine load ranges,
• proper venting of the circuit section,
• unobstructed routing relative to other engine bay components.

Original Origin and Fit for Mercedes W205 C300De Hybrid

This part was designed by Mercedes specifically for the cooling system architecture of the W205 C300De Hybrid model. This means maintaining factory connection diameters, appropriate material flexibility, and compatibility with body mounting points and brackets.

In practice, this translates to:

• secure fit with cooling system spigots and connectors,
• reduced hose stress during engine operation and vibrations,
• easier installation without the need for modifications to other components.

Performance Characteristics and Part Condition

The hose is offered as a used part, allowing for economical repair of the cooling system while maintaining original manufacturer specifications. For vehicles used intensively, including in urban and mixed cycles, using a secondary market OEM part is often a favorable compromise between cost and technical compliance.

Replacement of the coolant hose is recommended in situations such as:

• detected leaks or signs of corrosion on clamps and ends,
• hardening or cracking of the hose material,
• upgrading a section of the cooling system after other repairs.

Benefits of Using an Original Cooling Hose

Using a hose dedicated to the C300De Hybrid helps maintain stable thermal conditions throughout the entire cooling circuit. A correctly chosen component reduces the risk of localized overheating, which in modern powertrains can lead to costly damage to seals, cylinder heads, or ancillary components.

Additionally, maintaining the original routing of the hose:

• minimizes the risk of abrasion against adjacent components,
• facilitates future servicing and diagnostics,
• ensures compatibility with covers and other engine bay components.

Technical Support and Additional Materials

A properly functioning cooling system is crucial for powertrain durability, especially in hybrid vehicles. To better understand overheating symptoms, common faults, and best service practices, it is worth reading the article: Engine Cooling System – Overheating, Repair, and Used Radiators. This material helps assess when coolant hose replacement is justified and how to approach diagnosing the entire circuit.

If you are planning a comprehensive repair or upgrade of the engine area in your Mercedes and need other parts from the same group, such as additional coolant hoses, pipes, or connectors, check the available parts in the Mercedes Cooling System Hoses and Pipes category.