Mercedes W205 Horn Signal Alarm Siren High Tone 510Hz A2055421520

Mercedes W205 Horn Signal Alarm Siren High Tone 510Hz is an original warning system component, designed specifically for models of this series. The precisely selected 510 Hz frequency ensures a clear, highly audible signal, supporting road safety. This is the solution for drivers who want to maintain the factory sound characteristics and compatibility with the vehicle's electrical system.

Specifications and technical data

• SKU: A2055421520
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2055421520
• Substitutable numbers: A2055421520, A 205 542 15 20
• Category: Horns

Purpose and function of the horn

The presented sound signal is a component from the Horns group, responsible for generating a warning sound in the vehicle. The 510 Hz fanfare provides a characteristic, focused tone that cuts through ambient noise effectively, making it easier to quickly draw the attention of other road users. The design is adapted for installation in the electrical system of Mercedes W205 series vehicles, maintaining the parameters specified by the manufacturer.

Construction and acoustic characteristics

The horn is designed as a compact fanfare with a constant operating frequency of 510 Hz. This type of configuration allows for:

• a consistent, repeatable acoustic signal with every use,
• good audibility in typical urban and extra-urban conditions,
• maintenance of the factory sound timbre characteristic of Mercedes W205 vehicles.

Using an original sound signal reduces the risk of improper system operation and eliminates issues with matching electrical parameters to the factory wiring.

Condition, origin, and benefits of use

The offered horn is an original Mercedes brand component from the used parts group. Thanks to this, it retains the factory mounting geometry and compatibility with the intended installation location in the vehicle. In practice, this translates into:

• easier fitment to existing brackets and electrical harnesses,
• reduced need for installation modifications,
• maintaining consistency with other elements of the warning system.

Choosing an original sound signal is particularly important during post-accident repairs and when restoring the vehicle to the manufacturer's specifications.

Safety and practical application

A functional horn is crucial for the vehicle's active safety. The 510 Hz fanfare enables quick warning of other road users in emergency situations, while simultaneously meeting requirements for clear signal recognizability. Using an original component allows for maintaining:

• correct volume and sound characteristics,
• stable operation within the typical voltage range of the vehicle's electrical system,
• compliance with the manufacturer's factory safety standards.

If you are planning a comprehensive repair or upgrade of the warning system area in your Mercedes and need other elements from the same group, such as low-tone signals, high-tone signals, or additional sound modules, check the available parts in the Mercedes Horns category.

Technical support and additional materials

When selecting a sound signal for a specific body version and equipment level, it is worth paying attention to compatibility with the installation and the placement of factory mounting points. For those interested in a broader context of technical solutions in premium cars, including the design of powertrain and braking systems, an article comparing sports versions with standard models may be helpful, available here: Audi RS vs other models – what is hidden under the hood and chassis?.