BMW Z4 E89 Roadster Cabrio Aerial Antenna Base Module 9140247

BMW Z4 E89 Roadster Cabrio Aerial Antenna Base Module is an original roof antenna base module designed for the BMW Z4 E89 Roadster Cabrio model. This component is responsible for the stable mounting of the antenna and the proper routing of the radio signal and onboard systems, which is important for daily driving comfort. The used module is a sensible choice for roof and antenna system maintenance when you want to maintain the factory design.

Specifications and technical data

• SKU: 9140247
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9140247
• Substitutable numbers: 65209140247, 9140247
• Category: Other Interior Parts & Accessories

Purpose and function of the antenna base module

The antenna base module in the BMW Z4 E89 Roadster Cabrio is the component that connects the antenna to the bodywork and the vehicle's electrical system. It is responsible for:

• stable, sealed seating of the antenna in the convertible roof,
• safe routing of signal cables within the structure,
• maintaining the proper operation of the radio system and related comfort functions.

By using an original solution, compatibility with the factory roof geometry is maintained, which reduces the risk of leaks and fitment issues.

Benefits of using an original BMW module

Choosing an original antenna base module for the BMW Z4 E89 Roadster Cabrio allows you to maintain the consistency of the entire body and electrical system. The main advantages of this solution include:

• factory fitment to the shape of the roof and mounting holes,
• maintaining the antenna mounting stiffness intended by the manufacturer,
• reducing the risk of signal interference resulting from improper installation,
• easier diagnostics in the future thanks to the use of a component compliant with BMW service documentation.

This approach is particularly important in a convertible, where the roof and its components have a direct impact on the tightness and acoustic comfort of the interior.

Application in service and convertible roof repairs

The antenna base module is suitable both for replacing a damaged antenna after a collision or mechanical intervention, and for work related to roof renovation in the BMW Z4 E89 Roadster Cabrio. In practice, this element is often replaced when:

• the thread or antenna socket has been damaged,
• leaks have appeared at the point of passage through the roof covering,
• it is necessary to improve signal reception quality after previous repairs.

A used, original module allows you to restore the proper operation of the system without the need for unverified replacements, which is beneficial both technically and economically.

Condition of the part and installation aspects

The product is offered as a used part, which means it comes from disassembly and was previously used in a vehicle. Before installation, it is recommended to perform a standard verification of the sockets, seals, and mounting points to ensure proper seating in the roof and a stable connection to the vehicle's electrical system.

Due to the design of the antenna base module, installation should be carried out while maintaining tightness at the point of passage through the roof covering and with care for routing the wires inside the body. Proper arrangement of the wiring harness reduces the risk of chafing and subsequent interference with the radio system's operation.

Expanding antenna system and roof service

If you are planning a comprehensive repair or upgrade of the roof area in your BMW and need other elements from the same group, such as seals, mounts, or additional installation modules, check the available parts in the Other BMW category.

When planning broader service work, it is also worth reading the material comparing technical solutions in premium sports models – a detailed discussion of the differences in engine, brake, and chassis construction can be found in the article Audi RS vs other models – what is hidden under the hood and chassis?, which helps to better understand the manufacturers' approach to designing key vehicle systems.