BMW 1 3 Series F20 F21 F31 Empty Housing For Roof Antenna Alpinweiss White 300

BMW 1 3 Series F20 F21 F31 Empty Housing For Roof Antenna Alpinweiss White 300 is an original body component designed for 1 and 3 Series models, combining the function of a roof antenna with the characteristic, dynamic "shark fin" shape. Thanks to its factory finish in Alpinweiss 3 - 300, the component blends harmoniously with the body paint, maintaining a consistent look for the vehicle. This is a practical solution for users who want to restore the full functionality of the roof antenna while maintaining the aesthetics of original BMW equipment.

Specifications and technical data

• SKU: 2218150-AW
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 2218150
• Substitutable numbers: 65202218150, 2218150, 9227775, EM
• Color: Alpinweiss 3 - 300
• Category: Other Exterior Parts & Accessories

Purpose and function of the roof antenna shark fin

The roof antenna shark fin in BMW F-series models acts as an external antenna module, responsible for receiving radio and system signals while reducing air resistance. Its characteristic, streamlined shape improves aerodynamics compared to classic antenna masts while maintaining a modern roof line.

The component is factory-fitted to the roof curvature of F20, F21, and F31 bodies, which facilitates installation and ensures a stable fit on the bodywork. As a result, the seal with the roof panel and the correct routing of antenna cables inside the vehicle are maintained after replacement.

Alpinweiss 3 - 300 paint finish

The presented roof antenna shark fin is finished in the factory Alpinweiss 3 - 300 color, widely used across the BMW range. Using the correct paint code can reduce or completely eliminate the need for additional painting after installation, provided the vehicle has the same body shade. This is particularly important for post-accident repairs and replacing components after mechanical or wear-related damage.

The uniform paint coating ensures visual consistency with the roof, and the appropriate texture and gloss are in line with BMW factory standards. Consequently, the component does not stand out against the other body panels once installed.

Characteristics of the original BMW component

The original BMW roof antenna shark fin has been designed for precise fitment to the roof and compatibility with the factory antenna installation. The housing construction is optimized for:

• stable mounting to the roof panel,
• protection of internal connectors against moisture and contaminants,
• maintaining appropriate signal reception parameters.

As an element from the BMW exterior equipment group, the roof antenna shark fin is part of the vehicle's communication and multimedia system, influencing daily driving comfort – from radio reception to the operation of selected system functions, depending on the car's configuration.

Condition, installation, and service application

The offered roof antenna shark fin is a used component, which in practice means it comes from disassembly and may show signs of normal wear while maintaining functionality suitable for further use. This is a reasonable solution for drivers who want to reduce repair costs while sticking to original BMW components.

Replacing the roof antenna shark fin is a typical service operation performed, among other things, after mechanical damage, interference with the roof panel, or signal reception problems. During installation, it is recommended to maintain the factory wiring harness routing and check the seal with the roof to prevent moisture from entering the vehicle interior.

Selecting parts by OEM numbers and paint color

When selecting a roof antenna shark fin for a specific BMW, it is crucial to verify compatibility by part number and vehicle equipment configuration. In the case of painted components, such as the roof antenna in Alpinweiss 3 - 300, it is also important to match the paint code to avoid differences in the shade of the roof and the antenna housing.

If you want to deepen your knowledge on the safe selection of components by OEM numbers and paint codes, practical tips can be found in the guide buying parts online without risk – how to verify component compatibility by OEM numbers and paint codes, prepared for users of BMW and other premium brands.

Related categories and technical materials

If you are planning a comprehensive repair or upgrade of the body area in your BMW and need other elements from the same group, such as antenna housings, external signal modules, or additional roof accessories, check the available parts in the Other BMW category.

For a comparison of technical solutions used in various sports and production brands, including powertrains and equipment, you can read the article Audi RS vs other models – what is hidden under the hood and chassis?, which shows how manufacturers differentiate equipment and components depending on model versions.