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Wolo Express Pro Truck Train Horn

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List Price:$415.33
Our Price:$349.99
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  • Complete truck train horn system
  • Create a 128 decibels (comparable to a jackhammer)
  • Horns are constructed of heavy duty ABS plastic, and finished in a semi-gloss black
  • Trumpets can be separated from base for installation in tight spaces
  • Includes everything necessary for installation
  • System includes three trumpets, air compressor, air tank, and all install hardware
  • 2.5 gallon air tank

Wolo, the first company to design and sell ABS train horns, has a new universal flat rack design that makes installation easier because the horn requires less mounting space than other styles of train horns.

Wolo Express Pro train horn has three black trumpets that are made of reinforced ABS plastic, producing a sound that is just plain outrageous! The trumpets can be separated from the mounting base, for installation's that have limited space. Built rugged with a heavy-duty steel-mounting base that has a powder coat black finish, designed to withstand the toughest roads and vibration. Wolo Express Pro comes with a built-in heavy-duty 12-volt electric solenoid.

The on-board air system provided is designed to produce a large volume of high-pressure air to power the Wolo Express Pro train horn, and includes everything necessary for a professional installation. The compressor has a heavy-duty 12-volt motor that is balanced to precision. There are 4 heavy rubber bushings mounted into the compressor base plate to virtually eliminate vibration. For surface mounting of the compressor, there is an extended length stainless steel high pressure hose that connects the compressor to the 2.5-gallon metal air storage tank. Other features of the WOLO EXPRESS PRO include; a tank that has a built-in pressure switch, manual water drain, pressure gauge, pressure relief valve and brass fittings. Kit also comes with mounting hardware, 10 ft. of flexible high-pressure hose and 20 ft. coiled filler hose with quality brass fittings.

Get your Wolo Express Pro truck train horn today, and get to blasting!

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Spec Sheet
California Residents: Prop 65 Warning



128 Decibels
308/337/366 Hz – Low Range
Horn size: L 19 in. x W 18 in. x H 9-1/2 in.
Horn output with 90/110 psi: 128 db
Horn construction: ABS plastic, base - painted enamel, trumpets – semi gloss black finish
Electric solenoid: 12 volts / 300 milliamps
Hose type: 1/4 in. O.D.
Air fittings: Brass
Mounting hardware and 10 ft. of 1/4" O.D. high pressure hose included.

Voltage: 12-volts
Current: 21-amps at peak
Duty-cycle: 33% @ 100 psi
CFM: 2.55
Pump has washable air filter
Oil-less maintenance free
Permanent magnet motor that is gearless with
thermo protection
Compressor size: L 10-1/4 in. x W 3-1/2 in. x H 6-1/2 in.

Tank capacity: 2.5 gallons
Built in pressure switch: On 80 /off 110 psi
Safety pressure relief valve
Pressure gauge
Fitting size: All brass
Petcock water drain
Tank size: L 17-1/4 in. x W 6-1/2 in. x H 8-1/4 in.
Size compressor mount on tank:
L 17-1/4 in. x W 6-1/2 in. x H 15-1/2 in.



Everythign you need to install a Wolo Express Pro train horn will be included with your order. Installation instructions are available on our site if you're curious to see what you're getting into. Also, if you ever have questions, our service team has answers, and is available seven days a week.


Wolo Manufacturing Corporation (“Wolo”) warranties to the original purchaser, for one year from the date of purchase, that this product is free from defects in workmanship and materials. If there is such a proven defect, Wolo, at its option, will either repair or replace the item free of charge, if it is returned to Wolo within one year from the date of purchase together with proof of purchase as described below.

Wolo reserves the right to inspect any defect prior to settling any warranty claim by repair or replacement. This warranty is limited as above provided and Wolo will not be responsible for fire or other casualty or accident, due to neglect, abuse, abnormal use, modifications, faulty installation of this product, or natural causes.