Mercedes W166 Heater Radiator Air Conditioning Matrix Unit A1668302560

The Mercedes W166 Heater Radiator Air Conditioning Matrix Unit is a factory-fitted component of the heating and air conditioning system, responsible for efficiently dissipating heat from the air directed into the cabin. This component, sourced from the original Mercedes system, ensures stable operation of the heater and air conditioning matrix, which translates into a comfortable temperature inside the vehicle. Thanks to a design that meets the manufacturer's standards, the Mercedes W166 Heater Radiator Air Conditioning Matrix Unit allows for precise climate control in the car.

Specifications and technical data

• SKU: A1668302560
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A1668302560
• Substitutable numbers: A1668302560, A 166 830 25 60
• Category: A/C Evaporators

Purpose and function in the air conditioning system

The described evaporator is a component of the air conditioning and heating system in Mercedes W166 series models. It is responsible for heat exchange between the refrigerant and the air directed into the ventilation ducts, which enables effective cooling and temperature stabilization in the cabin. The use of the original design translates into proper airflow, even distribution of cold air, and correct cooperation with other HVAC system components.

Construction and technical characteristics

The evaporator from the Evaporators group has been designed as an integral part of the heater and air conditioning module, which facilitates its installation in factory mounting points. The matrix construction ensures a large heat exchange surface while maintaining compact dimensions, which is important in the tightly packed space under the cowl. A properly selected system of channels and heat exchange fins supports stable system operation under various thermal loads, both in urban conditions and during long-distance driving.

Original manufacturing for the Mercedes brand means maintaining the correct geometry of connections and compatibility with factory hoses and the heater housing. As a result, the component can be integrated into the existing system without the need for modifications, which reduces the risk of leaks and speeds up service work.

Condition, fitment, and service application

The offered evaporator is a used component, making it an attractive cost-effective alternative while maintaining compliance with factory specifications. Replacing a worn or leaking evaporator with an original component from the same series allows for restoring proper air conditioning operation, reducing cooling efficiency drops, and eliminating problems with fogged windows resulting from improper system operation. Using a part from the same vehicle platform minimizes the risk of installation issues and ensures a proper fit with the heater housing.

In service practice, such a component will work well both for standard replacement of a damaged evaporator and for larger tasks related to the regeneration of the entire heating and air conditioning module. Maintaining the original design facilitates diagnostics, bleeding, and subsequent system maintenance.

Benefits of using an original Mercedes evaporator

Using an original evaporator in the air conditioning system brings a number of practical benefits:

• maintaining factory cooling and cabin heating efficiency,
• proper cooperation with other HVAC system components,
• proper fitment to the heater housing and air ducts,
• reduced risk of leaks due to compatibility with factory connections,
• more predictable system behavior compared to replacements with uncertain specifications.

For the user, this means stable thermal comfort, efficient window defrosting, and lower load on the air conditioning compressor resulting from proper heat exchange. In the context of long-term vehicle operation, this is a solution that promotes maintaining the correct operating parameters of the entire system.

System expansion and related components

If you are planning a comprehensive repair or upgrade of the air conditioning and heating zone in your Mercedes and need other elements from the same group, such as additional evaporator modules, housing elements, or related heat exchange components, check the available parts in the Mercedes Evaporators category.

If you are also interested in the safe selection of used components in other vehicle systems and want to learn practical tips on verifying the condition of subassemblies, it is worth reading the guide: Second-hand braking system: how to safely choose discs, calipers, and ABS?.