Mercedes W447 Air Conditioning A/C Refrigerant Line Hose Tube Line A4478300502

Mercedes W447 Air Conditioning A/C Refrigerant Line Hose Tube Line is an original A/C system component designed for the precise routing of refrigerant within the installation. Thanks to its factory geometry and connectors tailored to the W447 platform, it ensures stable operating pressure and a leak-proof connection with other air conditioning components, which translates into efficient and comfortable system operation. This solution is particularly beneficial for professional repairs or restoring the factory air conditioning configuration in Mercedes vehicles.

Specifications and technical data

• SKU: RHD-A4478300502
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A4478300502
• Substitutable numbers: A4478300502, A 447 830 05 02
• Category: A/C Hoses & Fittings

Purpose and function in the air conditioning system

The line belongs to the Air conditioning lines, hoses, and connectors group, responsible for transporting refrigerant between key A/C system components. In Mercedes W447 models, this element:

• routes refrigerant between selected sections of the installation,
• maintains proper flow and pressure parameters,
• ensures a leak-proof connection thanks to factory connectors and a shape adapted to the vehicle body,
• reduces the risk of vibration and stress due to proper routing in the engine compartment.

A properly selected air conditioning line has a direct impact on interior cooling efficiency, correct compressor operation, and the durability of other system components.

Original origin and fitment for Mercedes W447

The element comes from the Mercedes brand, which means it maintains factory manufacturing standards and compatibility with the W447 platform. Original air conditioning lines are designed with consideration for:

• precise routing in the engine compartment and chassis,
• appropriate internal diameter for the specific type of compressor and condenser,
• types of connectors and seals used in the given model.

As a result, the line can be integrated into the existing system without the need for modifications, which facilitates service and reduces the risk of leaks after installation.

Performance characteristics and condition of the element

The offered air conditioning line is a used component, which in practice means a beneficial combination of original manufacturing quality and an attractive price compared to new components. In the case of A/C lines, it is particularly important to maintain:

• tightness along the entire length,
• no mechanical damage in the connector zones,
• stable geometry, allowing for correct placement in the vehicle.

Choosing a used OEM line is often a reasonable alternative to replacements with uncertain fitment, especially in modern models where the air conditioning system operates under high pressure and requires precisely selected components.

Technical support and A/C system safety

When replacing an air conditioning line, it is worth paying attention to the general condition of the installation, including the compressor, condenser, receiver-drier, and seals. To better understand the dependencies between individual elements and the symptoms of typical faults, the following article will be helpful: Air conditioning compressor – symptoms of failure, causes, and safe replacement. This will allow you to choose a repair strategy so that the newly installed line works in a properly functioning system and is not exposed to excessive loads.

If you are considering whether a new replacement or an original element from the secondary market is a better choice in your case, you will find a practical comparison of approaches in the material: New or used? A comparison of costs and quality of car parts. This is particularly useful when planning a larger scope of work within the air conditioning system.

Expansion of the air conditioning system in Mercedes

If you are planning a comprehensive repair or upgrade of the air conditioning zone in your Mercedes and need other elements from the same group, such as additional lines, flexible hoses, or service connectors, check the available parts in the Mercedes air conditioning lines, hoses, and connectors category.