FARBIN 4 Trumpet Air Horn 12/24V Train Horn 178DB - Super Loud Warning

In this review of the FARBIN 4 trumpet air horn kit we look at who will get the most value from this loud and affordable warning system. The bottom line: this kit is best for drivers of trucks, SUVs, vans, boats and other large vehicles who want a powerful, attention-grabbing horn without spending a fortune. The four metal trumpets and included electric solenoid deliver a distinctive, blunt warning tone that many customers find effective, and the kit's straightforward parts list means owners with basic DIY skills can install it without needing a professional.

Key Features

• Four trumpet set: The package includes 165mm, 225mm, 290mm and 345mm trumpets that combine to produce a layered, full warning tone.
• High output: The upgraded interior structure is designed to produce greater volume and a powerful sound that will draw attention in heavy traffic or emergencies.
• Durable construction: Trumpets are zinc alloy with all copper coils in the solenoid to resist corrosion and tolerate harsh weather and temperature extremes.
• 12V/24V compatibility: Works with either 12V or 24V vehicle electrical systems when paired with an air source, so it fits a wide range of trucks, buses, boats and SUVs.
• Included hardware: The kit ships with a solenoid valve and screw accessories so necessary mounting parts are on hand for installation.
• Easy hookup: The horn connects to a vehicle air source via the solenoid air connector, keeping installation approachable for a DIYer.

Who It's For

This horn kit is aimed at owners of larger vehicles who need a louder-than-stock warning device: pickup drivers who tow, commercial van operators, boat owners who want a backup signaling device, and off-road Jeep users who need a robust horn. It is also suited to fleet operators who want a low-cost, replaceable horn option with a striking look.

It is not the best choice for those who require a fully integrated electronic solution without an air source, or for buyers who demand precise premium fit-and-finish; some customers reported mixed impressions of build quality and variable ease of installation, so shoppers wanting flawless OEM-level finish and plug-and-play wiring may want a different, higher-end option.

Pros & Cons

Pros

• Very loud, layered four-trumpet sound suitable for heavy traffic and emergencies.
• Good value for the components included, offering a complete kit with solenoid and mounting screws.
• Durable zinc alloy trumpets and all copper coils built for weather resistance and longevity.
• Compatibility with 12V and 24V systems makes it widely usable across vehicle types.

Cons

• Sound quality impressions vary among users; some report it is less loud or refined than expected.
• Installation and wire length received mixed feedback, so DIYers should confirm fit and mounting space before buying.

Specifications

Brand	FARBIN
Trumpet sizes	165mm, 225mm, 290mm, 345mm
Voltage	12V / 24V compatible
Material	Zinc alloy trumpets, copper coils
Included parts	4 trumpets, electric solenoid valve, screw mounting accessories
Typical use	Truck, train, van, pickup, car, boat, yacht, jeep, bus

Our Verdict

The FARBIN 4 trumpet air horn kit is a sensible, budget-friendly option for owners of larger vehicles who need a loud, attention-getting warning device that is simple to install and built to withstand weather. It offers strong value through its included solenoid and mounting hardware, durable metal construction, and broad 12V/24V compatibility, though buyers seeking perfect fit-and-finish or uniform sound quality may prefer a higher-end horn.

Frequently Asked Questions

Does this horn work on 12V and 24V vehicles?
Yes, the kit is designed to operate on both 12V and 24V systems when connected to an appropriate air source.

Are installation parts included?
Yes, the package includes the electric solenoid valve and screw accessories for mounting; an external air source is required.

Is the horn weather resistant?
The trumpets use zinc alloy and the solenoid has copper coils for durability, making the kit suitable for use in harsh weather and temperature extremes.