Mercedes W203 W204 A207 W906 Breather Hose Pipe Hose Line Diesel A6422030017

Mercedes W203 W204 A207 W906 Breather Hose Pipe Hose Line Diesel is a component from the Cooling system hoses and pipes group, designed for Mercedes diesel engines. It is responsible for efficient pressure relief and equalization within the system, which promotes stable engine operation and proper coolant circulation. This is a practical solution for users who want to maintain the factory cooling system performance characteristics in their Mercedes models.

Specifications and technical data

• SKU: A6422030017
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A6422030017
• Substitutable numbers: A6422030017, A 642 203 00 17
• Fuel type: Diesel
• Category: Coolant Hoses

Purpose and function in the cooling system

The offered breather hose is dedicated to selected Mercedes models with diesel engines, including the popular W203, W204, A207, and W906 series. Its task is the controlled removal of air and gases from the coolant circuit, which reduces the risk of air locks, overheating, and unstable system operation. By maintaining the proper flow of the cooling medium, the engine can operate within the intended temperature range, which contributes to its durability.

Construction and fitment to the cooling system

The hose has been designed for a precise fit to the factory Mercedes cooling system. The properly shaped geometry of the hose facilitates correct routing in the engine bay, minimizing stress and the risk of rubbing against adjacent components. The hose construction promotes a tight connection with connectors and other system components, which is crucial for maintaining stable operating pressure and reducing leaks.

Benefits of using the original breather hose

Using a breather hose from the Cooling system hoses and pipes group dedicated to Mercedes allows you to maintain compliance with the vehicle's factory specifications. In practice, this means:

• a secure fit to the cooling system in diesel engines,
• stable venting of the coolant circuit,
• reduced risk of engine overheating,
• maintenance of the operating parameters for the diesel engine as specified by the manufacturer.

An element of this type is particularly important in vehicles operated under varying load conditions, where the cooling system works intensively and requires efficient air removal from the circuit.

Characteristics of the used product

The offered hose is a used part, which is a cost-effective solution for drivers looking for parts at a reasonable price while maintaining the original design. A used component allows for an economical repair of the cooling system while maintaining consistency with the manufacturer's factory design. This is a practical option for servicing Mercedes vehicles where both functionality and compliance with the original technical solution are important.

Technical support and additional information

During service work on the cooling system, it is worth paying attention to the condition of other hoses, pipes, and cooperating elements. 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 return lines, main hoses, or connection fittings, check the available parts in the Mercedes cooling system hoses and pipes category.

To better understand how operating conditions affect the durability of the cooling system and when it is worth considering replacing hoses, radiators, or fans, check out the guide Summer heat vs. cooling system: used radiators and fans as a guarantee of savings, which discusses issues related to cooling system operation at high temperatures in a practical way.