Radio Boost CD Mini R55 R56 R57 Audio Player Head Unit 3455539

Visual condition of the part 

The product shows signs of use visible in the photos. 

Radio Boost CD Mini R55 R56 R57 Audio Player Head Unit is an original multimedia system component designed for factory installation in Mini models. It ensures a consistent cockpit appearance, correct integration with the electrical system, and stable operation of factory audio functions. This makes it a practical service solution when replacing a damaged radio or restoring a vehicle to OEM specifications.

Specifications and technical data

• SKU: 3455539
• Mark: Mini (Genuine OE)
• Condition: Used
• OEM Part Number: 3455539
• Substitutable numbers: 65123452681, 3452681, 65123455539, 3455539, 65123453634, 3453634, 65123455263, 3455263, 65123452105, 3452105, 65123454567, 3454567, 65123452051, 3452051
• Category: Other Car Parts & Accessories

Technical characteristics and vehicle integration

The Radio Boost CD is a factory Mini audio module, designed to work with the original wiring harness and factory speakers. The device's design allows for installation in the place of the stock radio, which facilitates maintaining the original dashboard layout and eliminates the need for additional styling adapters.

As an OEM component, the player is adapted to the Mini electronic architecture, including communication with other onboard modules. This allows for correct operation of control functions from the center console and maintains consistency of messages on the vehicle's displays.

Audio system functionality

The Radio Boost CD acts as the central control module for the sound system, combining CD playback functions and audio signal management in a single unit. The device has been designed for daily use, ensuring intuitive operation and a logical button layout.

• Factory compatibility with the Mini audio system.
• CD playback support within the Radio Boost system.
• Integration with original cockpit control elements.

By maintaining the original system architecture, installing this radio allows you to avoid typical compatibility issues that may occur when using aftermarket units.

Service application and fitment

The player is intended for Mini vehicles from the R55, R56, and R57 series, which were factory-equipped with the Radio Boost CD system. It works well both as a replacement part after a failure and when restoring a car to a configuration close to the original after previous audio modifications.

The device has an assigned OEM part number and associated interchangeable numbers, which facilitates precise identification for a specific equipment configuration. Before purchasing, it is worth comparing the markings with the vehicle data or consulting a mechanic to ensure full compatibility with the installation.

Condition, origin, and benefits of choosing OEM parts

The presented player is a used item, sourced from dismantling, which allows for an economical restoration of the audio system's efficiency while maintaining factory specifications. Choosing an original OEM unit reduces the risk of problems with electronic communication, connector fitment, and center console installation.

In practice, this means:

• maintaining the original interior appearance of the vehicle,
• consistency with other electronic modules,
• easier diagnostics in case of potential future faults.

Support with selection and additional information

If you are planning a comprehensive repair or upgrade of your Mini's cockpit area and need other components from the same group, such as control panels, multimedia modules, or additional audio units, check the available parts in the Other Mini category.

When selecting audio system components, practical tips regarding differences between equipment versions and sports specifications may be helpful – you will find them in the article Audi RS vs other models – what is hidden under the hood and chassis?, which discusses, among other things, the manufacturers' approach to high-performance components.

If you want to organize the process of purchasing second-hand parts and better utilize OEM markings and reference numbers, it is worth reading the guide Safe purchase of used car parts online – a step-by-step guide, which describes practical methods for verifying the compatibility and quality of used components.