Air Conditioning Pipe Mercedes ML W166 C292 Refrigerant A/C Hose A1668304101

Air Conditioning Pipe Mercedes ML W166 C292 Refrigerant A/C Hose is an original cabin cooling system component designed to transport refrigerant between air conditioning sub-assemblies. Thanks to its factory geometry and connectors tailored for Mercedes installations, it ensures stable A/C system operation and correct pressure in the circuit.

Specifications and technical data

• SKU: rhd-A1668304101
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1668304101
• Substitutable numbers: A1668304101, A 166 830 41 01
• Category: A/C Hoses & Fittings

Purpose and function in the air conditioning system

The offered hose belongs to the Air conditioning pipes, hoses and connectors group and is a component of the refrigerant installation in Mercedes ML W166 series and GLE Coupé C292 models. It is responsible for a tight and secure connection between A/C system components, which has a direct impact on cooling efficiency, proper compressor lubrication, and even distribution of the refrigerant throughout the circuit.

Thanks to factory connectors and a properly selected diameter, the hose enables the maintenance of proper refrigerant flow, minimizing pressure drops and the risk of leaks at the connections.

Construction and fitment for Mercedes ML W166 / C292

The Air Conditioning Pipe Mercedes ML W166 C292 Refrigerant A/C Hose has been designed specifically for the body and engine bay architecture of the Mercedes ML W166 and C292, which translates into:

• precise routing of the hose along factory mounting points,
• proper shaping of bends, reducing stress during system operation,
• use of dedicated terminals and connectors for Mercedes A/C installations.

Such fitment facilitates installation, reduces the risk of twisting or kinking the hose, and allows for maintaining the original installation routing, which is important for both durability and subsequent service maintenance.

Benefits of using an original Mercedes hose

Using an original air conditioning hose in a Mercedes ML W166 / C292 provides a number of practical benefits:

• Factory compatibility – the hose works with original ports, compressor, condenser, and other A/C system elements without the need for modifications.
• Proper system tightness – properly selected connectors and hose geometry reduce the risk of refrigerant and compressor oil loss.
• Stable air conditioning performance – maintaining the designed refrigerant flow promotes even interior cooling and protects the compressor from overload.
• Easier diagnostics and service – the original component facilitates the work of service centers that rely on factory installation diagrams.

Component condition and installation recommendations

The air conditioning hose is offered as a used part, which allows for an economical A/C system repair while maintaining the manufacturer's original specifications. Before installation, a standard service procedure is recommended: checking the system for leaks, replacing seals on the connectors, and performing a pressure test after assembling the system.

To better understand the impact of the installation condition on the durability of the entire system, including the compressor, it is worth checking the service guide: Air conditioning compressor – symptoms of failure, causes and safe replacement. This will allow you to choose the correct procedure for filling and venting the system after replacing the hose.

Expanding the air conditioning system in a 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 pipes, flexible hoses, or service connectors, check the available parts in the Mercedes air conditioning pipes, hoses and connectors category.