Wolo® - Express Pro Plus™ Train Horn with On-Board Air System

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Product Details

Universal Express Pro Plus™ Train Horn with On-Board Air System by Wolo®. The Wolo Express Pro Plus 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 Plus 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 The Wolo Express Pro Plus train horn and includes everything necessary for a professional installation.


Sound Pressure Level: 128 dB
Voltage: 12 V
Amperage: 22 A
Tank Capacity: 5.0 gallon
Built in pressure switch: On 80 PSI; Off 110 PSI
Low Range: 308/337/366 Hz
Horn size: Length: 19", Width: 18", Height: 9-1/2"
Hose type: 1/4" O.D
Horn construction: ABS plastic, base - painted enamel, trumpets – semi gloss black finish
Electric solenoid: 12 V / 300 milliamps
Tank Size: Length: 20-1/2", Width: 8-1/2", Height: 10-1/2"
Compressor Size: Length: 11-1/2", Width: 3-1/2", Height: 6-1/2"
CFM: 3.5
Horn Output: 90/110 PSI


  • Will produce a super loud alerting sound to keep you safe on the road
  • Looks as good as sounds and sports a compact, elegant, and stylish design
  • Can be installed and assembled with no great effort, enables a secure connection
  • Manufactured with state-of-the-art materials and leading-edge innovations

Wolo is here with excellent products that are available at a competitive price. The company does its utmost to provide the best possible solutions for your needs. All products by Wolo are made with expert care and created by professionals to meet all your requirements. Wolo does not accept compromises when it is going about quality, so you can be sure that all products have only first-rate quality. With many years of manufacturing experience, Wolo is the name you can trust.

Wolo® is a second–generation family owned business providing cutting-edge products which deliver the ultimate in quality and value to protect and keep people safe. In 1965 Wolo was established by one person who had an idea and commitment to manufacture a single patented hood lock. Today Wolo is a leading company in horn design and technology which also creates a variety of vehicle emergency and safety warning lights, sirens and speakers, on-board systems, and many other top-notch products.

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Vehicle Fitment

This part is universal


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Wolo® - Express Pro Plus™ Train Horn with On-Board Air System

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