Description
Mercedes W212 Air Conditioning Pipe A/C AC Hose Line is an original cabin cooling system component designed for diesel engine vehicles. As part of the Air conditioning lines, hoses and connectors group, it ensures tight and stable refrigerant routing, which translates into efficient air conditioning operation and thermal comfort inside the vehicle. This used component allows for an economical yet technically correct repair of the A/C system in your Mercedes.
Specifications and technical data
- SKU: A2078303015
- Mark: Mercedes (Genuine OE)
- Condition: Used
- OEM Part Number: A2078303015
- Substitutable numbers: A2078303015, A 207 830 30 15, A2048301216, A 204 830 12 16, A2048305316, A 204 830 53 16, EM
- Fuel type: Diesel
- Category: A/C Hoses & Fittings
Purpose and function in the air conditioning system
The Mercedes W212 Air Conditioning Pipe A/C AC Hose Line is responsible for the precise routing of refrigerant between the individual components of the system. A properly selected hose maintains the correct operating pressure, minimizes performance drops, and reduces the risk of leaks that could lead to refrigerant loss and decreased cooling efficiency.
The element is dedicated to diesel-powered vehicles, which is important for matching the specific engine bay configuration and air conditioning system routing. As a result, installation is straightforward and orderly, without the need for modifying the hose routing.
Benefits of using an original A/C pipe
Using an original air conditioning pipe in a Mercedes W212 ensures:
- maintenance of the factory A/C system routing in the engine bay,
- appropriate rigidity and resistance of the hose to engine vibrations,
- proper cooperation with other system components, such as the compressor, condenser, or evaporator,
- reduced risk of leaks compared to generic aftermarket replacements.
The used component allows for reduced service costs while maintaining the proper operating parameters of the air conditioning system. It is a practical solution in situations where the existing hose has suffered from corrosion, mechanical damage, or leaks.
Condition, origin, and technical fitment
The Mercedes W212 Air Conditioning Pipe A/C AC Hose Line comes from a dismantled Mercedes vehicle and is offered as a used part. Such components are frequently chosen by professional workshops when a balance between reasonable cost and maintaining original geometry and compatibility with factory equipment is required. The element is intended for systems in diesel engine vehicles, which facilitates proper selection during repairs in the W212 family of vehicles.
Additionally, the pipe has an assigned OEM part number and interchangeable numbers, which allows for precise verification of compatibility with a specific equipment version and vehicle model year during the part selection stage, without the need for interfering with the system’s construction.
Application in diesel engine vehicles
In diesel engine vehicles, the air conditioning system operates in an environment with increased thermal and mechanical loads. A properly selected A/C pipe must be resistant to:
- temperature changes in the engine bay,
- vibrations transmitted from the engine unit,
- long-term exposure to external factors such as moisture or road debris.
Using an original hose in such a system promotes stable air conditioning operation, which is important for both driving comfort and the durability of other system components.
System expansion – related components
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 out the available parts in the Mercedes air conditioning lines, hoses and connectors category.
When selecting used components for a Mercedes, it is worth paying attention to original parts from dismantling, which allow for maintaining a high standard of comfort and functionality at reasonable service costs. More practical information on this topic can be found in the article Used parts for Mercedes – original parts from dismantling.





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