Mercedes-Benz W207 W212 Air Conditioning Heater Cover Housing A2128300803

Mercedes-Benz W207 / W212 Heater and Air Conditioning Housing is an original HVAC system component designed for E-Class and E-Class Coupé models. This component ensures proper airflow management within the heater and air conditioning unit, leading to stable cabin heating and cooling parameters. Thanks to its factory design, the housing perfectly integrates with the standard ventilation system, maintaining the airflow characteristics intended by the manufacturer.

Specifications and technical data

• SKU: rhd-A2128300803-1
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2128300803
• Substitutable numbers: A2128300803, A 212 830 08 03, A2078302860, A 207 830 28 60, KZ
• Category: Other Air Conditioning & Heating

Purpose and Function in the HVAC System

The presented heater and air conditioning housing is responsible for the mechanical enclosure and sealing of HVAC system components in Mercedes-Benz W207 and W212. In practice, this means:

• stable mounting of heat exchangers and airflow control elements,
• controlled directing of airflow to the ventilation ducts,
• minimizing unwanted leaks within the heater unit.

By preserving the original housing geometry, it is possible to maintain proper air conditioning and heating operation without altering the vehicle's structure.

Original Origin and Compatibility

The housing comes from the Mercedes parts line, ensuring compliance with the manufacturer's factory design and assembly standards. This component is dedicated for use in the W207 and W212 platforms, where it works with standard HVAC system components such as the heater core, evaporator, and air distribution flaps.

Original origin translates to:

• secure fit to body mounting points,
• compatibility with standard seals and mounting hardware,
• maintaining the factory structural rigidity of the heater unit.

Characteristics of the Used Component

The heater and air conditioning housing is a used part, meaning it comes from a dismantled vehicle but retains the functionality required for further operation. This type of component is a particularly beneficial solution for:

• post-accident repairs within the dashboard and HVAC tunnel area,
• mechanical damage to the existing housing (cracks, broken mounting tabs),
• economical restoration of the heating and air conditioning system while retaining OEM parts.

Using an original, used housing allows for maintaining the structural integrity of the system without the need for aftermarket replacements with uncertain geometry.

Benefits of Using an Original Heater Housing

Choosing a factory heater and air conditioning housing for the Mercedes-Benz W207 / W212 provides a range of practical service and operational benefits:

• no need for modifications to air ducts and mounting points,
• easier installation compared to non-original parts,
• maintaining the manufacturer's designed HVAC system seal,
• reducing the risk of incorrect air distribution in the cabin.

For workshops and users, this means shorter installation times and greater predictability of the final repair outcome.

Related Categories and Technical Materials

If you are planning a comprehensive repair or upgrade of the air conditioning and heating system area in your Mercedes and need other parts from the same group, such as housings, covers, or additional mounting components, check the available parts in the Other Mercedes category.

When planning more extensive service work or upgrades for premium vehicles, it is also worth familiarizing yourself with educational materials regarding the construction and differences between sports and standard vehicle versions – a practical comparison can be found in the article Audi RS vs Other Models – What Lies Under the Hood and Chassis?.

For those interested in the broader context of technical solutions development within the Mercedes brand, a review of S-Class generations may also be helpful, available in the publication Evolution of the Mercedes S-Class: From W140 to W222 – Innovations, Model Differences, and Mercedes Auto Parts Over the Years, which provides a better understanding of the development direction of comfort and climate control systems in this brand.