Aerial Roof Antenna BMW Z4 E89 Convertible Cabrio Base Unit Module 9140245

Description

Aerial Roof Antenna BMW Z4 E89 Convertible Cabrio Base Unit Module is an original module designed for installation in the rear part of the vehicle body. This component is responsible for stable radio signal reception and integration with the factory antenna system, ensuring electrical system consistency and maintaining factory performance parameters. As such, it serves as a functional service solution for repairs of the antenna system in the BMW Z4 E89.

Specifications and technical data

• SKU: 9140245
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 9140245
• Substitutable numbers: 65209140245, 9140245
• Location on the vehicle: Rear
• Category: Other Interior Parts & Accessories

Purpose and function of the roof antenna module

The presented Aerial Roof Antenna BMW Z4 E89 Convertible Cabrio Base Unit Module has been designed specifically for the BMW Z4 E89 Convertible model. As a module located in the rear of the vehicle, it works with the roof antenna installation, responsible for processing and transmitting the signal to the multimedia system and other vehicle systems that utilize the antenna signal.

Proper positioning at the rear of the vehicle allows for maintaining the correct antenna geometry, reducing interference, and ensuring proper cable shielding. As a result, the antenna system operates stably, and the driver receives predictable reception quality.

Compatibility and integration with the BMW Z4 E89

The module was developed as an OEM BMW system component, which means full integration with the factory wiring harness and onboard electronics. Using the original base unit allows you to:

• maintain compatibility with the electrical architecture of the BMW Z4 E89 Convertible,
• avoid issues with connector and mounting fitment,
• maintain the antenna system performance parameters specified by the manufacturer.

Consequently, replacing a damaged module with an original part is a technically safe and predictable solution in terms of the final result.

Operational characteristics and installation

As a component mounted in the rear body area, the roof antenna module is structurally prepared for operation in conditions typical for the luggage compartment and the area around the folding roof in the Convertible version. Properly selected connectors and mounting points facilitate service and replacement during standard workshop procedures.

With correct installation following the factory antenna cable routing, you can achieve stable signal reception and proper cooperation with the factory audio system and other systems using the roof antenna. This is a practical solution for workshops specializing in the BMW brand and for users who want to restore full functionality of the antenna system after damage or interference with the vehicle’s roof.

Component condition and advantages of choosing a used OEM part

The offered roof antenna module is a used part, which allows for economical repair while maintaining the original manufacturer’s specifications. Unlike many aftermarket replacements, the original BMW part ensures proper structural fit and predictable behavior within the vehicle’s electrical system.

If you want to better understand why a used OEM part is often a more practical choice than a replacement, it is worth reading our guide: 5 reasons why a used OEM part is a better choice than a replacement. You will find specific arguments and criteria for selecting service components there.

System expansion and related BMW components

If you are planning a comprehensive repair or upgrade of the rear body area in your BMW and need other elements from the same group, such as electronic modules, wiring harnesses, or additional installation components, check out the available parts in the Other BMW category.

For a comparison of technical solutions used in various brands and sports versions, you can also refer to the comparative material regarding advanced drivetrains and chassis, available in the article: Audi RS vs other models – what is hidden under the hood and chassis?. This is a good supplement to your knowledge about constructions used in premium class cars.

Summary

Aerial Roof Antenna BMW Z4 E89 Convertible Cabrio Base Unit Module is a practical choice when repairing or restoring the factory antenna system in the rear of the vehicle. The original BMW design promotes seamless integration with the electrical system, and the used nature of the component allows for reduced service costs while maintaining compliance with the manufacturer’s design.