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) 
    • Money Back Guarantee/Refund Policy
      All merchandise unless otherwise indicated may be returned within 30 days from the shipment arrival date for a refund. A Returned Merchandise Authorization (RMA) number is required for all returns. A 15% restocking fee may apply. Additional deductions may be made to reflect the products current market value. These terms apply to all refunds. Most products are shipped with a refund/replacement guarantee period unless otherwise noted in the product listing. Customers must inform HornBlasters.com of any order discrepancy within 7 days from the invoice date so that we may investigate and resolve the situation accordingly.
    • HornBlasters.com satisfaction guarantee
      HornBlasters.com offers our customers a 30-day satisfaction replacement or refund guarantee on all purchases, except when otherwise noted in the product listing.
    • Cross-Shipments
      HornBlasters.com will not cross-ship returned merchandise.
    • Physical Damage Policy
      Physical damage to any product purchased at HornBlasters.com will effectively void warranty coverage. Physical damage includes but is not limited to improper handling and/or any other type of damage sustained by irregular usage.



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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