Mercedes-Benz C-Class W204 Left N/S Antenna Amplifier Filter Module A2048709189

The Left Antenna Filter Amplifier for Mercedes-Benz C-Class W204 is an original module designed for installation on the left side of the body. This component is responsible for stable antenna signal amplification and interference filtering, which translates to a more comfortable use of radio and multimedia systems in your Mercedes. Thanks to its factory design, the module maintains full compatibility with the vehicle's electrical system.

Specifications and technical data

• SKU: A2048709189
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2048709189
• Substitutable numbers: A2048709189, A 204 870 91 89, KZ
• Location on the vehicle: Left
• Category: Other Starters, Alternators, ECUs & Wiring

Module Purpose and Function

The presented antenna filter amplifier has been designed specifically for Mercedes-Benz C-Class W204 models, for placement on the left side of the vehicle. Its task is to manage the antenna path – from improving radio signal reception quality, through noise reduction, to stabilizing the operating parameters of the antenna system.

Thanks to its precise electrical characteristics, the module supports the correct operation of factory infotainment systems, ensuring predictable system behavior under various operating conditions.

Construction and Fit for Mercedes-Benz C-Class W204

The amplifier has been constructed as a dedicated element for a specific body platform, which facilitates installation in the original mounting points on the left side of the vehicle. The electrical connectors are prepared to work with the factory wiring harness, reducing the need for installation modifications.

This solution allows for maintaining the consistency of the antenna system while minimizing the risk of compatibility issues typical of universal replacements. Appropriate shielding and housing design contribute to stable operation in conditions typical for the vehicle's body compartment.

Benefits of Using an Original Module

Using the original antenna filter amplifier in a Mercedes-Benz C-Class W204 offers a number of practical benefits:

• maintaining signal reception parameters consistent with the vehicle manufacturer's specifications,
• secure electrical integration with the factory antenna system,
• reduction of interference and noise in the radio path,
• easier diagnostics in case of potential installation faults.

A used element allows for an economical repair of the antenna system while maintaining the original design specifications.

Installation and Service Application

The module is intended for installation on the left side of the vehicle, in the location designated by the manufacturer. In practice, this means the possibility of service replacement of a damaged amplifier without interfering with the body structure or rebuilding the electrical installation. Proper placement on the vehicle is important both for correct routing of antenna cables and for protecting the component from external factors.

This solution is particularly useful for repairs after collisions, problems with radio signal loss, or restoring full multimedia system functionality after previous installation modifications.

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

To compare solutions used in sports versions of other brands and to better understand the differences in the construction of powertrains and their associated systems, it is worth reading the article Audi RS vs. Other Models – What Lies Under the Hood and Chassis?, which discusses, among other things, the specifics of powertrains, brakes, and chassis in the context of selecting spare parts.