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Nathan AirChime K5LA Premium Train Horn Kit

(Premium Kit With Quick Filling & Moderate Pneumatic Use)


5 reviews

Suggested Addons
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The Viair Air Compressor Bracket will allow you to mount your compressor upright and is compatible with Viair Compressor models 275C-485C.
Add Dual Viair Air Compressor Brackets Tooltip
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This kit has everything you need to drain your tank from the push of a button from inside the cab!
Add 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 485C Air Compressor Upgrade Tooltip
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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!
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Add Platinum Extended Warranty Tooltip
2 year add-on to existing warranty. DOES cover accidental damage and advance replacement.
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It doesn’t get much better than the Nathan AirChime K5LA. With our Nathan AirChime K5LA premium train horn kit, you get the loudest train horn on the market along with one of the most powerful onboard air systems! There is no substitute for the extremely loud and low rumble of an authentic Nathan Airchime K5LA train horn coupled with the insane performance of our 485C onboard air system. If you were looking for the best of the best, THIS IS IT! 

Setting the standard for what every train horn tries to be, our Nathan Airchime K5LA train horns are the real deal. The Nathan Airchime K5LA train horns are the most common train horn seen on locomotives since the ’80s and the sound is undeniable.  Massive in size and even more massive in tone, the Nathan AirChime K5LA train horn features five large die-cast aluminum bells with stainless steel diaphragms. Built to withstand years of use and abuse from the elements out on the track, you simply won’t find a more dependable train horn and the volume speaks for itself. 

When bringing these massive locomotive horns from the rails to the street, you better have an onboard air system that can handle them. That’s why we paired the Nathan AirChime K5LA Train Horns with our 485C onboard air system. With 5-8 gallons of air and the most powerful Viair compressor available, the Nathan AirChime premium train horn kit will give you an earth-shaking 5-8 seconds of honk time. The powerful Viair 485C stealth black air compressor provides this kit with a 100% duty cycle all the way up to 200 PSI, giving you a system that can power your locomotive horns, run air tools, and power air suspension without breaking a sweat!

  • Railroad-use train horn!
  • Black powdercoat finish
  • Heavy-duty 485C air compressor
  • Stainless steel liquid-filled air pressure gauge
  • Capable onboard air system
  • Loudness & tone of a locomotive at your fingertips!
  • Max honk time: 5-8 seconds
  • Part Number: HK-K5-5485K / HK-K5-8485K
  • Operating Pressure: 150 PSI
  • Restart Pressure: 110 PSI
  • Voltage: 12-Volt DC
  • Horn: Nathan AirChime K5LA (K5 low mount American tune)
  • Horn Material: Cast Aluminum
  • Horn Length: 19″ (482.6 mm)
  • Horn Width: 29.75″ (755.65 mm)
  • Horn Height: 9.25″ (234.95 mm)
  • Horn Weight: 37 lb (16.78 Kg)
  • Horn Air Inlet: ½″ NPT
  • Air Tank: 5-gallon air tank / 8-gallon air tank
5-Gallon Tank Length: 20.5″ (520.7 mm)
8-Gallon Tank Length: 32.5″ (825.5 mm)
5-Gallon Tank Diameter: 9.5″ (241.3 mm) 8-Gallon Tank Diameter: 10.5″ (266.7 mm)
5-Gallon Tank Height: 11.5″ (292.1 mm) 8-Gallon Tank Height: 12.5″ (317.5 mm)
  • Air Compressor: Viair 485C air compressor
  • Air Flow: 2.24 CFM at Free Flow
  • Max Amperage: 23 amps
  • Duty Cycle: 100% @ 150 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)
Click Here for a 5-gallon air tank dimensional drawing
Click Here for a 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. 50 sec. (± 05 sec.)
0 to 150 PSI 9 min. 05 sec. (± 15 sec.)
110 to 150 PSI 2 min. 30 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 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

5.0 Based on 5 Reviews
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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 Premium Train Horn Kit Review

Nathan horns

"Holy ****" loud horns. Nothing but smiles.


Untouchable Sound and Quality

Had the Nathen K3LA on my 2018 Raptor. I thought that was really cool until I sold my Raptor and got another truck and installed the K5LA's on it. Maaannn......the K5LA's are the ultimate. Wish I had a larger air tank but bought the best pump and wow.

HornBlasters Nathan AirChime K5LA Premium Train Horn Kit ReviewHornBlasters Nathan AirChime K5LA Premium Train Horn Kit Review


customer service was on point, effortless ordering thru website and the product.......CRAZY LOUD!!! love it, you guys are awesome!


Words can't describe!!!

I enjoy this thing so much! Ppl want to drive like A-holes, well not