BMW E61 Antenna Amplifier Diversity Module Japan 315Mhz 6934481

BMW E61 Antenna Amplifier Diversity Module Japan 315Mhz is a specialized component from the Car antennas group, designed to support the radio system in BMW vehicles. The module is responsible for stable signal amplification in the 315 MHz band, which translates into more reliable operation of the vehicle's comfort and radio communication systems.

Specifications and technical data

• SKU: 6934481
• Mark: BMW (Genuine OE)
• Condition: Used
• OEM Part Number: 6934481
• Substitutable numbers: 6934481, 65206934481
• Category: Antennas

Purpose and function of the module

The presented antenna amplifier is a component of the diversity system, which uses several radio signal sources in the bodywork to select the one with the best parameters at any given moment. As a result, the system reduces interference, improves reception stability, and supports the operation of systems working on the 315 MHz frequency.

The diversity solution is particularly important in BMW-class cars, where repeatable quality of body electronics operation and predictable communication with comfort modules are expected.

Benefits of using an original BMW module

Using an original antenna amplifier module in a BMW E61 ensures:

• preservation of the factory antenna installation architecture without the need for wiring modifications,
• consistent operation with other body control units,
• proper electrical matching to roof and window antennas,
• reduction of the risk of communication errors resulting from the use of unforeseen replacements.

Thanks to this, the module is a safe service solution for repairs of the antenna system in a BMW E61, especially where maintaining the original vehicle configuration is required.

Technical characteristics and vehicle integration

The module operates in the 315 MHz band, which is typical for selected markets (e.g., Japan) and meets the requirements of local radio standards. Its design is prepared for cooperation with factory antennas and the BMW electrical installation, which facilitates installation in place of the previous component.

As a part from the Car antennas group, the module acts as an active link in the signal path – it amplifies and organizes the signal before it reaches the appropriate controllers. Proper matching of this element is important both for reception quality and for the correct operation of comfort and safety systems that use radio communication.

Product condition and service application

The item is offered in a used condition, which allows for an economical repair of the antenna system while maintaining the original BMW specification. This type of solution is particularly beneficial in the case of older vehicle generations, where the availability of new components is sometimes limited, and the priority is compatibility with factory electronics.

The module will work well both as a replacement part when troubleshooting signal loss issues and when restoring full functionality of radio systems after mechanical damage or corrosion within the antenna installation.

Complementary BMW Car antennas and service knowledge

If you are planning a comprehensive repair or upgrade of the body area responsible for receiving and transmitting radio signals in your BMW and need other elements from the same group, such as amplifiers, antenna bases, or receiver modules, check the available parts in the BMW Car antennas category.

When planning a wider range of service work, it is worth approaching the topic holistically – by selecting original used parts in one place. How to effectively organize such purchases and avoid random replacements is explained in the article: Comprehensive supply of original used parts – One-Stop-Shop guide.