HornBlasters Shart 127H Air Horn Kit


  • You’ll know it when you hear it! It comes with everything you need to get your horn working: an extremely reliable compressor, 1.5-gallon air tank, and a pre-wired pressure switch. All you have to do is hook up two wires and this air system comes to life! Coupled with the two-wire horn installation above, this kit is extremely simple to install!

    Unlike some other train horn kits in this price range, our kit comes with lots of little extras that shouldn’t be underestimated. Paired with this durable, beautiful horn is a complete HornBlasters onboard air source. This system features a drain cock, 145 PSI safety blow-off valve, a pre-wired pressure switch, and most importantly a one year warranty. We also include all the wiring and fittings you’ll need to hook the horn kit up in a vehicle.(Note: Tank mounted air compressors are not fully sealed.  For this reason, the manufacturer recommends the tank/compressor system be mounted in the upright position in an enclosed space away from moisture, dirt, debris, etc...)

    Hear these horns now!

    • High-efficiency & Extremely Loud
    • Stainless Steel Diaphragms Won't Rust!
    • Manifold-less Design For Flexible Installation
    • All-inclusive Train Air Horn Solution!
    • Heavy Duty Compressor For Faster Fills!
    • All Standard Mounting Hardware
    • Max Honk Time: 5 Seconds
    • Can be heard from almost 2 Miles away!
    • Part Number: HK-S25-127H
    • Horn: Shart Horn 
    • Kit Length: 25in 
    • Weight: 6.5 lb
    • Fitting Size: ½″ Tube
    • Air Source Kit: HornBlasters 127H
    • Working Pressure: 120 PSI
    • Length: 15.0″ (381 mm)
    • Width: 6.0″ (152.4 mm)
    • Height: 13.0″ (330.2 mm)
    • Net Weight:13.75 lb (6.24 Kg)
    • Air Source Kit Tank: HornBlasters 1.5 Gallon 4 Port Tank
    • Volume: 1.5 gals (6.6 L)
    • ¼″ NPT Ports: 4
    • Length: 15″ (381 mm)
    • Width: 6″ (152.4 mm)
    • Height: 8.5″ (215.9 mm)
    • Weight: 8.65 lb (3.92 Kg)
    • Air Source Kit Compressor: HornBlasters 275C Air Compressor
    • Voltage: 12 volts DC
    • Max Amperage: 18 amps
    • Maximum Duty Cycle: 25% @ 100 PSI
    • Maximum Working Pressure: 150 PSILength6.5″ (165.1 mm)
    • Width: 3.5″ (88.9 mm)
    • Height: 4.5″ (114.3 mm) 
    • Weight: 5.1 lb (2.31 Kg) 




Use this product in a safe and responsible manner, at a distance of at least 100 feet from others.

Proper Hearing protection must be worn when using this air horn. Hearing loss or permanent damage may result from unsafe use.

Never operate this product in a closed environment or close to pedestrians or others.

It is the consumer's responsibility to comply with local noise ordinances and D.O.T. sound level laws.


This product can expose you to chemicals including lead, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to www.P65Warnings.ca.gov.

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