Mercedes V251 W251 Horn Signal Fanfare Right O/S 510 Hz A2515420320

Mercedes V251 W251 Horn Signal Fanfare Right O/S 510 Hz is a precisely tuned sound signal designed for right-side installation in Mercedes V251/W251 series vehicles. With a frequency of 510 Hz, it provides a clear, well-audible tone that improves communication safety on the road. This is a solution for users expecting a proven design and compliance with the manufacturer's factory standards.

Specifications and technical data

• SKU: A2515420320
• Mark: Mercedes (Genuine OE)
• Condition: Used
• OEM Part Number: A2515420320
• Substitutable numbers: A2515420320, A 251 542 03 20
• Location on the vehicle: Right
• Part type: Electric Horn
• Category: Horns

Purpose and function of the horn

The presented horn has been designed as an element of the signaling system in Mercedes V/R-Class vehicles from the V251/W251 family. Mounted on the right side, it typically works in conjunction with a second signal of a different frequency, creating a characteristic, easily recognizable warning sound. The 510 Hz frequency provides a suitably high, focused tone that effectively cuts through ambient noise. An acoustic signal configured in this way improves the clarity of warnings for other road users, which is particularly important in urban traffic and at higher speeds. Stable sound characteristics help maintain compliance with homologation requirements for vehicles of this class.

Construction and fitment for Mercedes V251/W251

The Right Horn 510 Hz has been developed for integration with the factory electrical system of the Mercedes. The design provides for installation in a dedicated location on the right side of the vehicle, which facilitates correct sound direction and maintains proper acoustic distribution in combination with the left signal. Proper geometric and electrical fitment allows for the maintenance of the original operating characteristics of the signaling system, without the need for modifications to the wiring harness or brackets. Consistency with the factory Mercedes design translates into predictable operation and reduces the risk of incorrect installation.

Acoustic parameters 510 Hz

The 510 Hz frequency is typical for the high tone in dual-tone sets used in premium class vehicles. Such a signal:

• ensures good audibility in urban and extra-urban traffic,
• creates a clear, expressive sound in combination with a lower tone on the opposite side,
• promotes quick recognition of the signal by other drivers and pedestrians. Thanks to this, the 510 Hz horn meets the requirements of users expecting a predictable response from the signaling system in emergency situations and during daily operation.

Condition, verification, and service application

The item comes from the Horns category and is intended for service applications in Mercedes vehicles where replacement of the right sound signal is necessary. The used component allows for economical repair while maintaining the original operating characteristics of the system. Proper selection of parts for a specific vehicle version is enabled by the technical specification, including manufacturer markings and reference numbers available in the table above. Such a solution is particularly beneficial when restoring full functionality to the signaling system after mechanical damage, corrosion, or electrical failure. Using an original horn helps maintain acoustic consistency with the vehicle's factory design.

Signaling system expansion and additional information

If you are planning a comprehensive repair or upgrade of the front signaling system area in your Mercedes and need other elements from the same group, such as additional sound signals, mounting brackets, or power harnesses, check the available parts in the Mercedes Horns category. For users interested in optimizing service costs and making informed choices when selecting used parts for repairs of other brands, the following guide article may be helpful: Repairing a Volkswagen for pennies? Discover how to save on original car parts. The tips contained therein concern the effective use of the used parts market and can also be an inspiration when planning service work on other vehicles.