Horn Signal Mercedes W211 W219 Fanfare 420Hz Horn Signal Siren A0065420120

Horn Signal Mercedes W211 W219 Fanfare 420Hz is an original component from the Horns group, designed for factory acoustic systems in Mercedes E-Class W211 and CLS W219 models. The used component provides the correct, homologated sound signal at a specific frequency, maintaining compliance with the electrical system and the manufacturer's safety standards.

Specifications and technical data

• SKU: A0065420120
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A0065420120
• Substitutable numbers: A0065420120, A 006 542 01 20, BG
• Category: Horns

Purpose and function of the horn

The horn in a Mercedes is responsible for generating a clear warning signal that must be well audible in both urban and extra-urban traffic. The 420 Hz version operates in the mid-acoustic range, which contributes to sound clarity in typical road conditions and facilitates compliance with homologation requirements.

Using an original horn allows for maintaining proper electrical parameters, correct system load, and compatibility with factory wiring harnesses and mounting brackets in Mercedes W211 and W219 vehicles.

Construction and performance parameters

The presented horn is an electrical construction adapted for operation in the vehicle's front compartment, in an area exposed to moisture, temperature changes, and road contaminants. The housing is designed to protect internal components from external factors while directing the sound wave outside the vehicle.

The selection of the 420 Hz frequency ensures:

• a clear, focused acoustic signal,
• good audibility in urban traffic,
• tonal consistency with other horns used in Mercedes vehicles.

Benefits of using an original Mercedes horn

Using an original horn in a Mercedes W211 or W219 allows for maintaining the manufacturer's factory standards regarding safety and acoustic comfort. Proper fitment to the system reduces the risk of power supply issues, malfunctions, or excessive circuit load.

The main advantages include:

• Compatibility with the factory wiring harness – no need for electrical system modifications.
• Consistency with the vehicle's factory sound characteristics.
• Possibility of use as a replacement part for a worn or damaged horn.

Condition and service application

The item comes from disassembly and is intended for reinstallation in Mercedes vehicles where restoring the functionality of the acoustic signal system is required. The used horn is an economical service solution, allowing for reduced repair costs while maintaining the original manufacturer's specifications.

It is suitable both for standard replacement of a damaged sound signal and for comprehensive repair work in the front part of the vehicle, where it is necessary to restore the full functionality of the warning system.

Expansion of the sound signal system and related components

If you are planning a comprehensive repair or modernization of the front zone in your Mercedes and need other components from the same group, such as additional sound signals, mounts, or power harnesses, check the available parts in the Mercedes Horns category.

More information about the benefits of using original, used components from disassembly in vehicles of this brand can be found in the article: Used parts for Mercedes – original components from disassembly.