HornAir 244K Nightmare Edition Onboard Air System

Honking & Capable Onboard Air System


Suggested Addons
Add Viair Air Compressor Bracket Tooltip
The Viair Air Compressor Bracket will allow you to mount your compressor upright and is compatible with Viair Compressor models 275C-485C.
Add Tire Inflation Kit Tooltip
Our Tire Inflation Kit includes a 30' Coil Hose, Tire Inflation Gun, Air Relocation Kit, Blow Gun, & a complete Air Accessory Fitting Kit!
Add 220 PSI Digital Pressure Gauge Tooltip
Using a tank mounted sensor wired directly to your gauge, our 220-PSI rated Digital Air Pressure Gauge delivers unparalleled accuracy with microprocessor stabilized readings.
Add Cooling Fan Isolator Kit Tooltip
Isolate your Compressor, drastically cutting down on vibration, allowing your compressor to run quieter & cooler, & extending the duty cycle up you 25%!
Add 444C Dual Air Compressor Upgrade Tooltip
Double your performance with the 444C Dual Compressor upgrade. Recharge your tank faster and honk more often. Great for air tools and other air source needs as well.
Add Gold Extended Warranty Tooltip
1 year add-on to existing warranty. Does NOT cover accidental damage, no advanced replacement.
Click here for more information!
+See price at checkout
Add Platinum Extended Warranty Tooltip
2 year add-on to existing warranty. DOES cover accidental damage and advance replacement.
Click here for more information!
+See price at checkout

If you need a workhorse of an onboard air system that can tackle any job you throw at it, look no further than the HornAir 244K. Not only is the HornAir 244K great for train horns, but this constant duty system also packs enough power to meet and exceed many pneumatic needs. Our Nightmare edition comes with a stealth black finish on the Viair 444 air compressor to give the system a clean and low-profile look.

Included is our matching black 2-gallon 6 port air tank that has four 1⁄4 in ports and two 1⁄2 in ports. Strategic placement of the ports allows you to be able to install your drain cock on the bottom-most port on the tank for optimal draining no matter how the air tank is oriented. The ½ inch ports provide optimal airflow, preventing bottlenecking that occurs in other kits.

The stealth black Viair 444C air compressor that comes with our Horn Air 244K is a constant-duty compressor that was built to handle a heavy workload. With a 100% duty cycle at 100 PSI and a recharge time from 110-150 PSI of just less than a minute, the Horn Air 244K makes sure you always have the air that you need. The 444C is part of a new generation of compressors that feature a brand new, patent-pending, intercooler head design that helps disperse heat much more efficiently.

An increasing number of people are using this for more than just blasting horns! With a system like the Horn Air 244K, you can also use the air supply to:

  • Adjust Tire Pressure
  • Moderate Pneumatic Use
  • Inflate Water Toys and Safety Gear
  • Supply Air to Load Leveling Bags
  • Supply Air for Differential Lockers
  • Blow up Kids Toys
  • And lots more!

While the Horn Air 244K is a complete onboard air system that provides you with everything you need to get up and going, be sure to add on a Wireless Remote, Tire Inflation Kit, or an Electric Drain Valve kit to get the most out of one of the best onboard kits you can buy!

Our HornAir systems come complete with all necessary fittings, including a Viair 110/150 Pressure Switch with a built-in relay, safety blow-off, air gauge, and drain cock. Unlike many other onboard air systems, ours comes with 10 and 18 gauge wires, as well as a complete wiring kit including a fuse holder. This takes out the guesswork and helps ensure your system is installed correctly. All of our kits are also backed by a one-year manufacturer's defect warranty as well as lifetime tech support!    

      Please Note: This HornAir system is not recommended for AirChime horns. We recommend using at least a 4-gallon tank with larger-scale train horns like the P3, P5, K3, and K5; however, this kit is perfect for HornBlasters Shocker horns, Outlaw, and Bandit series horns.

      0 1.76 13 0 100.0 13
      10 1.63 14 1.0 88.5 15
      20 1.49 16 2.0 81.3 16
      30 1.43 17 3.0 75.6 17
      40 1.36 17 4.0 70.6 18
      50 1.29 18 5.0 65.5 18
      60 1.24 18 6.0 59.0 19
      70 1.18 18 7.0 53.1 20
      80 1.10 19 8.0 47.7 19
      90 1.02 19 9.0 43.2 19
      100 0.95 20 10.0 38.8 19
      110 0.87 20 11.0 34.7 18
      120 0.83 19 12.0 30.6 18
      130 0.77 19 13.0 25.8 17
      140 0.71 19 14.0 23.8 16
      150 0.66 19
      160 0.61 18
      170 0.57 18
      180 0.50 17
      190 0.45 17
      200 0.43 16

      * Supply Voltage: 13.8 Volts

      0 to 150 PSI 3 min. 45 sec. (± 10 sec.)
      110 to 150 PSI 1 min. 15 sec. (± 05 sec.)

      * Supply Voltage: 13.8 Volts

      • Designed for HornBlasters Shocker horns
      • All-inclusive onboard air solution!
      • Top-end 150 PSI compressor perfect for train horns
      • Comes with a standard 1/2" push-to-pull Fitting
      • Complete fitting kit with safety valve & drain cock
      • All standard mounting hardware
      • Part Number: HA-244K
      • Operating Pressure: 150 PSI
      • Restart Pressure: 110 PSI
      • Voltage: 12-Volt DC
      • Air Tank: HornAir 2-gallon 6 port air tank
      • Tank Length: 17" (431.8 mm)
      • Tank Diameter: 6" (152.4 mm)
      • Tank Height: 7" (177.8 mm)
      • Tank Weight: 10 lb (4.54 Kg)
      • Tank Ports: x2 1/2" NPT, x4 1/4" NPT
      • Air Compressor: Viair 444C black air compressor
      • Max Amperage: 19 Amps
      • Maximum Duty Cycle: 100% @ 100 PSI
      • Maximum Pressure: 150 PSI
      • CFM @ 0 PSI: 1.76 CFM
      • Compressor Length: 11.25″ (285.75 mm)
      • Compressor Width: 4.0″ (101.6 mm)
      • Compressor Height: 6.75″ (171.45 mm)
      • Compressor Weight: 9.75 lb (4.42 Kg)

      2-Gallon Air Tank Dimensional Drawing

      • 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.
      • Warranty
        This product is backed by our One-Year Manufacturer's Defect Warranty!
      • 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.

      Warnings & Notices

      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 www.p65warnings.ca.gov.