Mercedes S211 W211 Tone Horn Signal Fanfare Right O/S A0055426420

Mercedes S211 W211 Tone Horn Signal Fanfare Right O/S is an original, used acoustic system component, designed for precise installation on the driver or passenger side depending on the body version. It provides a clear, audible sound signal, supporting the vehicle's active safety while maintaining the factory sound profile. Thanks to the original design, integration with the electrical system and body mounts is predictable and straightforward.

Specifications and technical data

• SKU: A0055426420
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0055426420
• Substitutable numbers: A0055426420, A 005 542 64 20
• Location on the vehicle: Right
• Color: Grey
• Category: Horns

Purpose and function of the horn

The presented horn is a component of the warning system in Mercedes E-Class W211 sedan and S211 estate models, mounted on the right side of the vehicle. Its task is to generate a sufficiently loud and clear sound signal that meets traffic regulations and manufacturer standards. Using an original component ensures the consistency of the electrical system's operation and proper acoustic parameters.

Construction, color, and fitment

The horn belongs to the Horns category and was designed specifically for the W211/S211 platform, which ensures a proper fit to factory mounting points. The gray housing blends harmoniously into the engine bay without interfering with other components. Its placement on the right side of the vehicle ensures proper sound wave propagation and compatibility with factory brackets and wiring harnesses.

Benefits of using an original Mercedes horn

Using an original horn in a Mercedes W211/S211 offers a number of practical technical benefits:

• preservation of the factory sound characteristics, in accordance with the manufacturer's specifications,
• secure fit to existing brackets and covers in the engine bay,
• predictable cooperation with the vehicle's electrical system,
• reduced risk of signal system malfunction.

As a result, the horn is a functional service solution when replacing a damaged or faulty unit, without the need for modifications to the installation or custom mounts.

Condition, service application, and part selection

The item comes from dismantling and is offered as a used part, allowing for an economical repair while maintaining the original manufacturer's specifications. This type of component is particularly useful in situations where the factory horn has suffered mechanical damage, corrosion, or a loss of proper acoustic parameters. When choosing this product, it is worth verifying compatibility with the specific body version and model year to ensure full installation compatibility.

If you are planning a comprehensive repair or upgrade of the front area of your Mercedes and need other items from the same group, such as additional sound signals, brackets, or mounts, check out the available parts in the Mercedes Horns category.

How to consciously choose used horns

When selecting a used horn, it is worth paying attention to structural compatibility, the condition of electrical connectors, and the absence of visible damage to the housing. A properly selected component allows you to restore full functionality of the signal system without excessive costs. If you want to learn more about how to wisely buy second-hand components and what to look for when evaluating them, read our guide Used parts – Your guide to the best offers in the automotive store.