Mercedes S204 Rear Antenna Amplifier Aerial Module Left N/S Top A2048204989

Mercedes S204 Rear Antenna Amplifier Aerial Module Left N/S Top is a specialized module from the Car antennas group, responsible for the stable amplification of radio signals and other antenna signals in the vehicle. The component has been designed for precise integration with the Mercedes electrical system, which translates into predictable operation of the multimedia system and comfort in daily use. Thanks to its factory design, it ensures consistency with the original bodywork architecture and antenna installation.

Specifications and technical data

• SKU: A2048204989
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2048204989
• Substitutable numbers: A2048204989, A 204 820 49 89
• Location on the vehicle: Rear, Left
• Category: Antennas

Purpose and function of the antenna amplifier

The presented antenna amplifier is a component of the signal reception system in Mercedes vehicles, mounted in the rear left part of the body. Its task is to amplify the signal from the roof or body antenna before transmitting it to the audio or navigation system control unit. Properly selected electrical parameters allow for reducing interference, improving reception stability, and maintaining consistent signal quality in various road conditions.

Construction and integration with the Mercedes installation

The amplifier is designed as a component for direct integration with the factory Mercedes electrical harness. This means matching connectors, correct mounting points, and compatibility with the factory cable routing in the rear left part of the vehicle. Such a design facilitates installation, minimizes the risk of installation errors, and eliminates the need for modifications to the wiring, which is particularly important for maintaining the original character of the vehicle.

Benefits of using an original antenna amplifier

Using an original antenna amplifier to replace a damaged or unstable component allows for restoring proper reception of radio signals and other antenna-based services. In practice, this translates into:

• more uniform radio station reception on longer routes,
• reduced susceptibility to momentary signal loss,
• consistency of operating parameters with the factory settings of the multimedia system.

For the user, this means predictable operation of the audio system without the need for additional, universal solutions that often require compromises in terms of installation and performance quality.

Vehicle placement and installation aspects

The amplifier is intended for mounting in the rear left part of the body, which facilitates access to factory mounting points and antenna cables. This placement promotes stable harness routing and limits the component's exposure to accidental mechanical damage during daily use. When replacing, it is recommended to maintain the original cable routing and check the condition of the connectors to fully utilize the capabilities of the antenna system.

Characteristics as a used OEM component

The offered antenna amplifier is an original component from disassembly, which allows for maintaining compliance with the factory Mercedes specification. A used OEM component is often the preferred solution for repairing older vehicles, as it ensures structural and electrical fit without the need for adaptation. This type of part will work well both for standard antenna system repairs and for restoring full functionality of the multimedia system after body damage.

If you are planning a comprehensive repair or upgrade of the rear body area in your Mercedes and need other components from the same group, such as antenna bases, antenna modules, or mounting elements, check the available parts in the Mercedes car antennas category.

To better plan your purchases and efficiently collect all the necessary used components for repairing the antenna system and other vehicle systems, it is worth checking out the guide on our blog: Comprehensive supply: from the engine to the smallest clip – how to collect used car parts in one place.