Genuine BMW Mini Cooper One 1 R55 R56 Radio Boost CD Player Head Unit 3450803

Genuine BMW Mini Cooper One 1 R55 R56 Radio Boost CD Player Head Unit is an original component from the Electronic control modules and controllers group, designed for factory installation in Mini R55, R56, and R57 series models. It ensures a design consistent with the dashboard, proper integration with the vehicle's electrical system, and stable operation of the audio system in accordance with the manufacturer's standards.

Specifications and technical data

• SKU: 3450803-1
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 3450803
• Substitutable numbers: 65123455540, 3455540, 65123448827, 3448827, 65123451873, 3451873, 65123451874, 3451874, 65123448284, 3448284, 65123450803, 3450803, BG
• Category: ECUs & Computer Modules

Characteristics and purpose of the radio head unit

The presented CD radio head unit has been designed specifically for the Mini R55, R56, and R57 range, ensuring full compatibility with the factory electrical installation and interior architecture. As an OEM component from the Electronic control modules and controllers group, it works with other comfort and body modules, minimizing the risk of communication errors in the vehicle's network.

The device is intended for installation in the original location in the center console, which allows for maintaining a consistent cockpit appearance and operational ergonomics. Using a factory radio head unit makes it easier to maintain the proper functioning of control functions via panel buttons and – depending on the car's configuration – integration with other onboard systems.

Integration with vehicle installation and systems

The radio head unit operates as the central element of the audio path, communicating with other controllers in the vehicle. Thanks to the design provided by the manufacturer:

• it ensures correct data exchange with other electronic modules,
• it maintains the stability of the multimedia system,
• it limits the risk of interference resulting from non-original solutions.

Choosing an original Mini radio head unit allows for maintaining factory operating logic and predictable audio system behavior, which is particularly important during vehicle servicing and diagnostics.

Benefits of using an original Mini radio head unit

Using this model of radio head unit in a Mini R55, R56, or R57 brings a number of practical benefits:

• Factory fit – proper mounts, connectors, and front panel shape facilitate installation and ensure aesthetic alignment with the dashboard.
• Functional consistency – the device works with the existing installation without the need for harness modifications or the use of additional adapters.
• Stable system operation – maintaining the original electronic architecture reduces the risk of communication errors between modules.

For users who care about maintaining the character of the Mini interior and the proper operation of onboard systems, choosing a factory radio head unit is a technically safe and predictable solution.

Condition and service application

The radio head unit comes from a used vehicle, making it an attractive cost-effective alternative to new components while maintaining the original manufacturer's specifications. This type of component is particularly useful in situations where the existing module has suffered electronic or mechanical damage, or where there are communication problems in the audio installation.

Replacing it with an original Mini radio head unit allows for restoring the proper functioning of the multimedia system while preserving the factory look of the cockpit and compatibility with other controllers in the vehicle.

Related components and electronic system development

If you are planning a comprehensive repair or upgrade of the electronic zone in your Mini and need other elements from the same group, such as comfort modules, body controllers, or other management units, check the available parts in the Mini electronic control modules and controllers category.

When selecting and replacing advanced electronic components, it is worth paying attention to the experiences of other premium brands – you can find more about the importance of original modules and maintaining the vehicle's character in the article Audi and emotions in their purest form. How do used parts help maintain the brand's DNA?, which well illustrates how properly selected electronic elements affect the perception of the car and driving comfort.