Mercedes W211 W219 Air Conditioning Heater Matrix Unit Housing Box A2118302660

Mercedes W211 W219 Air Conditioning Heater Matrix Unit Housing Box is a factory HVAC system component designed for installation in E-Class and CLS models. This complete air distribution housing, classified under the Heat Exchangers category, ensures proper airflow guidance through the heater core and evaporator, resulting in stable heating and efficient cooling of the vehicle interior.

Specifications and technical data

• SKU: rhd-A2118302660
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2118302660
• Substitutable numbers: A2118302660, A 211 830 26 60, A2118302260, A 211 830 22 60, BG
• Category: Heater Cores

Purpose and function in the HVAC system

The heater and air conditioning housing in the Mercedes E-Class W211 and CLS W219 is a central element of the ventilation system, responsible for the airtight seating of heat exchangers and the proper distribution of air to individual cabin zones. A correctly selected housing allows for maintaining factory airflow characteristics, stable temperature, and even heating and cooling of the windshield, footwells, and passenger space.

By maintaining the original geometry of the air ducts, this component minimizes pressure drops in the system, which promotes quiet blower operation and improves acoustic comfort inside the vehicle. Proper fitment to the dashboard structure facilitates service and reduces the risk of unwanted resonances or rattles while driving.

Construction and fitment for Mercedes W211 / W219

The presented housing is an OEM Mercedes construction, designed specifically for the interior architecture of W211 and W219 models. This means maintaining factory mounting points, compatibility with original mixing flaps, actuators, and air conditioning and heating system sensors. Such a configuration allows for installation without modifications, using standard brackets and seals.

The element belongs to the Heat Exchangers group, which in practice means it is adapted to work with the heater core and A/C evaporator, providing them with stable support and proper airflow guidance. The rigid construction of the housing limits thermal and mechanical deformation, which is important for long-term operation in varying temperature conditions.

Benefits of using the original housing

Using the factory Mercedes W211 / W219 Air Conditioning Heater Matrix Unit Housing Box provides a number of practical benefits:

• maintaining the cabin heating and cooling efficiency designed by the manufacturer,
• proper operation of the automatic air conditioning thanks to correct airflow guidance,
• better system airtightness compared to non-original replacements,
• easier assembly and disassembly during dashboard service or heater/evaporator replacement,
• reduced risk of window fogging resulting from leaks or housing deformation.

For workshops specializing in the Mercedes brand, using the original HVAC housing also means predictable assembly time and a lower risk of complaints related to blower noise or uneven air distribution.

Condition and service application

The item is offered as a used part, which in practice is a cost-effective solution while maintaining factory construction and fitment. This type of housing is particularly suitable in situations where mechanical damage to the housing has occurred (cracks, broken mounts) or previous unprofessional repairs have resulted in system leaks.

Replacing the heater and air conditioning housing is also recommended when service reveals deformations affecting the operation of mixing flaps or problems with the proper seating of heat exchangers. Using the original housing allows for restoring the correct operating conditions of the entire HVAC system and facilitates further diagnostics of potential faults.

System expansion and additional information

If you are planning a comprehensive repair or upgrade of the heating and air conditioning zone in your Mercedes and need other components from the same group, such as heater cores, evaporators, or additional airflow modules, check the available parts in the Mercedes Heat Exchangers category.

During service work on modern diesel units, it is also worth paying attention to the condition of the fuel supply system. Symptoms such as uneven engine operation, smoke, or power loss may accompany problems with other components, which is why an article describing typical symptoms and consequences of neglect may be helpful – you can find it here: Diesel injector faults – how to recognize them and the risks of neglecting them.