Nathan AirChime K5LA 8485 Nightmare Edition Train Horn Kit

(Premium Kit With Quick Filling & Heavy Duty Onboard Air)


1 review

Add Dual Viair Air Compressor Brackets 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!
Add 1/2″ Electric Drain Valve Kit Tooltip
This kit has everything you need to drain your tank from the push of a button from inside the cab!
Add 220 PSI Digital Air 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 AirChime Mounting Bracket Tooltip
This heavy duty pedestal mount gives you the ability to install the horn with enough clearance to connect airline directly to the bottom of the base!
Add Gold Level Extended Warranty See price in cart
Add Platinum Level Extended Warranty See price in cart

Hear these horns now!

Always pushing the boundaries of performance and power, it was only a matter of time before we came out new kit that would beat out all of the others. With our Nathan Airchime 8485K Train Horn Kit, a new train horn kit reigns supreme as the best train horn kit we have to offer. We took the loudest horn that you can buy and paired it with our most over-the-top and overpowered onboard air system yet.

There really is no substitute for the real deal. The Nathan AirChime K5LA Train Horns that are featured in this kit are the loudest horns that you can fit on a vehicle. The same exact train horns that are used on most locomotives today, the Nathan AirChime K5LA Train Horns is a 5-chime die-cast horn that produces a thunderous roar that is easily recognizable as the classic train horn tone that has been on most trains since the 80S. Designed to be heard for miles and withstand all the abuse that mother nature can dish out for decades at a time, you won’t find a more powerful and durable train horn. 

These massive horns are powered by our equally powerful HornAir 8485 Onboard Air system. As the most powerful onboard air system that we have ever delivered in a complete kit, the Nathan Airchime 8485K Train Horn Kit is more than equipped to handle the largest of train horns, as well as tire inflation, air suspension, air tools, and any other pneumatic task to need to accomplish. Our giant 8-gallon tank will supply you with plenty of air to work with as well as give you Nathan Airchime K5LA Train Horns a solid 8 continuous seconds of blast time.  Dual Viair 485K Air Compressors power the system, giving the Nathan Airchime 8485K Train Horn Kit a 100% Duty Cycle all the way up to 200 PSI and will recharge your 8-gallon tank from 110-150 PSI in just over a minute and a half! 

Our Nathan AirChime K5LA Train Horn comes standard in a Painted Black Finish. Make sure to select the Black Powder Coat Finish option on the drop-down menu to give your investment a sleek and professional black powder coat finish that keeps your Nathan AirChime K5LA Train Horn more protected from the elements!   

An increasing number of people are using this for more than just blasting horns! With a system like Nathan Airchime 8485K Train Horn Kit, 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!
  • Railroad-Use Train Horn!
  • Heavy Duty 485C Air CompressorS
  • Extra Large Five Gallon Air Tank
  • Max Honk Time: 8-10 Seconds
  • Part Number: HK-K5LA-8485K
  • Horn: Nathan AirChime K5LA (K5 Low Mount American Tune)
  • Material: Cast Aluminum
  • Horn Length: 19″ (412.75 mm)
  • Horn Width: 29.75″ (755.65 mm)
  • Horn Height: 9.25″ (234.95 mm)
  • Horn Weight: 26.75 lb (12.13 Kg)
  • Horn Port: ½″ NPT
  • Tank Volume: 8.5 gals (32.18 L)
  • 1/2" NPT Ports: 7
  • 3/4" NPT Ports: 1
  • Tank Mounting Hole Dimensions: 27.35" x 3.5" 
  • Tank Length: 32.5″ (825.5 mm)
  • Tank Diameter: 10.5″ (266.7 mm)
  • Tank Height: 12.5″ (317.5 mm) (With Legs)
  • Tank Weight: 20 lb (9.07 Kg)
  • Compressor: Viair 485C Air Compressor
  • Voltage: 12 volts DC
  • Air Flow: 2.24 CFM at Free Flow
  • Max Amperage: 23 amps
  • Maximum Duty Cycle: 100% @ 200 PSI
  • Maximum Working Pressure: 200 PSI
  • Compressor Length: 10.63″ (270 mm)
  • Compressor Width: 4.1″ (104.14 mm)
  • Compressor Height: 6.44″ (163.57 mm)
  • Compressor Weight: 11.1 lb (5.03 Kg)

8-Gallon Air Tank Dimensional Drawing

0 2.24 12 0 70.0 12
10 1.84 14 1.0 51.0 15
20 1.75 16 2.0 47.0 16
30 1.67 17 3.0 44.0 18
40 1.61 18 4.0 41.0 20
50 1.54 19 5.0 38.0 21
60 1.47 20 6.0 35.0 21
70 1.42 21 7.0 32.0 22
80 1.36 21 8.0 29.0 22
90 1.30 22 9.0 27.0 22
100 1.23 22 10.0 25.0 23
110 1.17 22 11.0 22.0 22
120 1.11 22 12.0 21.0 21
130 1.06 22 13.0 21.0 21
140 1.01 23 13.8 21.0 21
150 0.97 22      
160 0.92 22      
170 0.88 22      
180 0.84 21      
190 0.77 21      
200 0.73 21      

* Supply Voltage: 13.8 Volts

0 to 150 PSI 7 min. 15 sec. (± 15 sec.)
110 to 150 PSI 1 min. 55 sec. (± 05 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 product is backed by our One-Year Manufacturer's 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 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

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little girl now has trust issues

I new these things where loud but I didn't know they would wake the dead. 180psi from the 8 gallon tank and dual via air compressors is more than enough to unleash the deafening scream of these things, it's like a Union Pacific train is in the bed of my truck every time I honk these things. Oh and the little girl.. Her dad pointed out the horns and at the exact second she peaked under the truck the fury of these 5 trumpets was released upon those poor little ears (by accident of course) overall I give these horns a 10 out of the 5 star review they are more than I expected, but also definitely go for the electric drain, the tank that I replaced from the amazon horns I had was full of water cause I was too lazy to drain it.

HornBlasters Nathan AirChime K5LA 8485 Nightmare Edition Train Horn Kit Review