Mini Cooper One R55 R56 R57 Air Conditioning Heater Radiator 3422666

Mini Cooper One R55 R56 R57 Air Conditioning Heater Radiator is an original cabin heating system component designed for Mini R55 and R56 series models. As a dismantled part, it offers a practical and cost-effective solution for air conditioning and ventilation system repairs, allowing you to restore efficient interior heating. Thanks to its factory origin, it ensures a proper fit for the installation in your Mini vehicle.

Specifications and technical data

• SKU: 3422666
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 64113422666
• Substitutable numbers: 64113422666, 3422666
• Category: Other Air Conditioning & Heating

Function and application of the Mini Cooper One R55 R56 R57 Air Conditioning Heater Radiator

The heater radiator, also known as the heating system heat exchanger, is responsible for transferring thermal energy from the engine cooling system to the air directed into the cabin. In practice, this means that a functional heat exchanger enables:

• efficient heating of the vehicle interior in low temperatures,
• defrosting and demisting of windows via warm airflow,
• maintenance of stable thermal conditions in the cabin.

In Mini Cooper R55 and R56 models, a correctly selected heater radiator is crucial for vehicle comfort during the autumn and winter seasons, as well as for safety, by improving visibility when windows are fogged up.

Construction and fitment for the Mini heating system

The heat exchanger in this model is structurally matched to the factory heater housing and cooling system hoses in the Mini Cooper R55 and R56. This means:

• compatibility with original coolant connection ports,
• proper arrangement of airflow channels within the heater housing,
• compatibility with the stock fan system and airflow controls.

As a result, installation is similar to the factory process, without the need for modifications or the use of additional adapters. This is important for the durability and tightness of the entire heating system.

Characteristics of the used part

The offered Mini Cooper One R55 R56 R57 Air Conditioning Heater Radiator comes from a used vehicle, which allows for a reasonable purchase cost while maintaining the manufacturer's original specifications. For heating system components, this is significant because:

• original components are designed specifically for the particular Mini model,
• factory dimensions and geometry of the exchanger promote proper airflow,
• compatibility with stock dashboard elements and air ducts is maintained.

Choosing a used, original heat exchanger is often preferred for repairs where fitment to the existing installation and predictable long-term performance are priorities.

Benefits of using an original Mini heater radiator

Using an original Mini Cooper One R55 R56 R57 Air Conditioning Heater Radiator instead of a worn or leaking component allows you to restore full functionality of the heating system without interfering with the vehicle's construction. The main advantages of this solution include:

• stable operation of the heating and ventilation system under typical road conditions,
• preservation of factory airflow characteristics and air distribution in the cabin,
• reduced risk of fitment issues typical of universal aftermarket replacements.

For Mini owners who expect consistency with the vehicle's factory specifications, this is a technically predictable and convenient solution for continued operation.

Part selection and additional technical information

When selecting a heater radiator for the Mini Cooper R55 R56, it is crucial to compare manufacturer markings and interchangeable part numbers with your vehicle's data, which confirms full compatibility with your specific equipment version. It is worth ensuring that the heat exchanger is intended specifically for the R55/R56 series, which minimizes the risk of installation problems.

If you are planning a comprehensive repair or upgrade of your Mini's cabin heating zone and need other components from the same group, such as coolant hoses, heater housings, or airflow control elements, check out the available parts in the Other Mini parts category.

When deciding on heating system repairs, it is also worth considering the differences between refurbished parts and used originals – the article Refurbished or used original – which part to choose for repairs? may be helpful, as it discusses the practical aspects of such a choice.

To compare the characteristics of sports drivetrains and braking systems with solutions used in standard vehicle versions, you can read the material Audi RS vs other models – what is hidden under the hood and chassis?, which shows how manufacturers differentiate the construction of key components.