Heater Hose Mercedes W205 Heater Matrix Heat Exchanger Pipe Line A2058350300

The Mercedes W205 heater hose is a component of the cooling system responsible for the efficient flow of coolant between the heater core and the heat exchanger. A properly selected hose ensures stable operation of the cabin heating system, reduces the risk of leaks, and supports safe heat dissipation from the engine. By choosing an original hose from the Coolant System Hoses and Pipes group, you gain a component structurally matched for installation in the Mercedes C-Class W205 generation.

Specifications and technical data

• SKU: rhd-A2058350300
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2058350300
• Substitutable numbers: A2058350300, A 205 835 03 00
• Category: Coolant Hoses

Function and Role in the Cooling System

The heater hose in the Mercedes W205 operates within the coolant circuit, connecting the heater core to the heat exchanger. It is responsible for:

• stable flow of heating medium into the vehicle's interior,
• maintaining the seal of connections in the heater core area,
• proper dissipation of excess heat from the engine unit.

Thanks to its correct shape and diameter, the hose works with factory spigots and clamps, which facilitates installation and reduces the risk of hose stress during system operation.

Construction and Fit for Mercedes W205

The offered element belongs to the Coolant System Hoses and Pipes group, meaning it has been designed for operation under elevated temperatures and variable coolant pressure. The hose's construction is profiled for installation in the Mercedes W205 engine bay, taking into account:

• routing along factory brackets and mounts,
• appropriate bending radius to avoid flow restrictions,
• compatibility with original heater core and heat exchanger connectors.

This precise fit translates to secure installation and predictable cooling system behavior in daily operation.

Benefits of Using an Original Hose

Using a heater hose dedicated to the Mercedes W205 helps to mitigate common problems associated with leaks and overheating. Key benefits include:

• maintaining the original cooling system geometry,
• better cooperation with other system components,
• reduced risk of leaks in the heater core area,
• stable cabin heating operation in various temperature conditions.

For the user, this means more predictable cooling and heating system performance, which directly impacts driving comfort and protects the engine unit from overheating.

Condition and Service Application

The offered heater hose is a used part, making it an attractive solution for service repairs where cost optimization while maintaining compliance with factory specifications is a priority. It is particularly suitable in situations where:

• the existing hose has suffered mechanical damage or corrosion,
• leaks are present in the heater core area,
• several cooling system components need replacement during a single service intervention.

Selecting a hose dedicated to a specific Mercedes generation allows for reduced diagnostic and installation time, and minimizes the risk of mismatched hose diameters or lengths.

Cooling System Expansion and Technical Knowledge

If you are planning a comprehensive repair or upgrade of the cooling system area in your Mercedes and require other elements from the same group, such as flexible coolant hoses, rigid return lines, or sections connecting the heater core to the engine block, check the available parts in the Mercedes Coolant System Hoses and Pipes category.

To better understand the impact of efficient coolant circulation on engine durability and the symptoms of overheating, it is worth consulting the guide Engine Cooling System – Overheating, Repair, and Used Radiators, which practically explains the relationship between cooling system design and engine lifespan.