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Jackass 127H Air Horn Kit

(Non-Weather Sealed Air Supply)


7 reviews

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You may get some sideways glances and dirty looks, but you will be turning heads with our Jackass 127H air horn kit. We designed this kit from the ground up to give you maximum volume with minimum installation space requirements. With a mid-range tone that could peel the paint off a wall, our Jackass 127H air horn kit packs more punch than even some train horns.

Our Jackass 127H air horn kit features the notoriously loud Caboose air horn, a three-chime air horn. Extremely small and extremely loud, our Caboose air horn is one of the loudest horns we carry, with a blast that is sure to wake people up. Just over a foot in length, our Caboose air horn is designed to fit in any ride of any size. With the 1/4" valve already pre-installed for you, the set-up has never been easier!

Just as powerful and compact as the horn, our HornAir 127H air source unit we paired the Caboose with makes the Jackass 127H a great kit for beginners or vehicles with limited space. With the majority of the kit already pre-plumbed and pre-wired, installation is much quicker and easier than kits with larger horns. Even though our Jackass 127H is compact, it still sports some serious performance with its 1.5-gallon air tank, providing enough air to give the horns up to a 4 second blast time! The incredibly quick Viair 275C air compressor recharges the system from 110-145 PSI in only 35 seconds!  

As with all HornBlasters horn kits, our Jackass 127H comes complete with all required components and detailed instructions.

  • High performance
  • All-inclusive air horn solution!
  • Pre-wired air system for easy installation
  • Pre-installed fittings & air valve
  • Max honk time: 5 to 7 seconds

(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... Failure to mount this product as directed will void the warranty)

**Detaching the compressor from the tank will void your warranty on this kit. If you need a solution where the compressor is detached, please look at our 232 and higher models. **

  • Part Number: HK-B3-127H / HK-B3K-127H
  • Operating Pressure: 150 PSI
  • Restart Pressure: 110 PSI
  • Voltage: 12-Volt DC
  • Horn: Caboose air horn
  • Horn Length: 12.500″ (317.5 mm)
  • Horn Width: 6.000″ (152.4 mm)
  • Horn Height: 6.250″ (158.75 mm)
  • Horn Weight: 3.350 lb (1.52 Kg)
  • Horn Air Inlet: 1/2" air line
  • Air Source Unit: HornBlasters 127H air source unit
  • Air Source Length: 15.0″ (381 mm)
  • Air Source Width: 6.0″ (152.4 mm)
  • Air Source Height: 13.0″ (330.2 mm)
  • Air Source Weight: 13.75 lb (6.24 Kg)
  • Air Tank: 1.5-gallon 4-port air tank
  • Volume: 1.5 gal (6.6 L)
  • Air Compressor: 275C air compressor
  • Max Amperage: 18 amps
  • Maximum Duty Cycle: 25% @ 100 PSI
0 2.03 10 0 57.5 10
10 1.17 12 1.0 32.0 13
20 1.11 13 2.0 30.0 14
30 1.04 15 3.0 28.5 16
40 1.01 15 4.0 26.5 16
50 0.97 16 5.0 24.5 17
60 0.92 16 6.0 22.5 17
70 0.88 17 7.0 21.5 18
80 0.83 17 8.0 20.0 18
90 0.79 17 9.0 18.5 18
100 0.76 18 10 17.0 17
110 0.72 18
120 0.67 18

* Supply Voltage: 13.8 Volts

0 to 120 PSI 2 min. 10 sec. (±10 Sec.)
90 to 120 PSI 35 sec. (± 5 Sec.)

* Supply Voltage: 13.8 Volts

  • 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 of any order discrepancy within 7 days from the invoice date so that we may investigate and resolve the situation accordingly.
  • Warranty
    This Kit is backed with a 1 Year Manufactures Defect Warranty!
  • Satisfaction Guarantee offers our customers a 30-day satisfaction replacement or refund guarantee on all purchases, except when otherwise noted in the product listing.
  • Cross-Shipments will not cross-ship returned merchandise.
  • Physical Damage Policy
    Physical damage to any product purchased at 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.

Warnings & Notices

Hearing Loss warning icon
Hearing Protection Required

This product produces extreme loudness. Proper hearing protection must be worn at all times during its operation. Hearing loss or permanent damage may result from unsafe use. Use this product in a safe and responsible manner and at a distance of at least 100 meters from others. Never operate this product in a closed environment, in close proximity to living beings, or where prohibited by law.

Safety warning icon

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

Customer Reviews

4.9 Based on 7 Reviews
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Filter Reviews:
United States United States

Easy to install. Was completed in about an hour

Jonathan W.
United States United States

Makes driving with libtards tolerable

I’m enjoying scaring the **** out of left lane chicanes!


HornBlasters has a great product and superior people to deal with. Excellent experience,thank you all.

Love Horn Blasters...smiles across the board.



Really loud, everything needed for install. I only wish they gave you a couple more feet of air hose.


Horn blasters

This product is awesome haven't had not one problem with it and sounds amazing, highly recommend getting yourself one