Nathan AirChime K5LA Train Horn

Authentic Locomotive Horn & Loudest Available!


4 reviews

Add 1/2" Brass Electric Valve Kit Tooltip
Everything you need to hook-up your train horn to an existing onboard system.
Add 1/2" Manual Valve Kit Tooltip
Feather your sound just like a conductor with our 1/2" Manual Valve Kit.
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!
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Hear these horns now!


The most common question we get asked is, “What are your loudest horns?”  Well, here they are! The same horn used on most American locomotives for decades, the Nathan AirChime K5LA train horn. While there are many kinds of train horns, the Nathan AirChime K5LA is the golden standard that other train horns attempt to duplicate. With its massive size and intimidating tone, the Nathan AirChime K5LA proves that if you want a train horn, there really is no substitution for the Godfather of Train Horns. With its lower profile straight manifold, the LA style is the best choice for installs where you are limited on space vertically, but have plenty of room horizontally. 

As America's most popular train horn since the 1980s, the AirChime K5LA train horn is best known for its unusually upbeat and thunderous tone. Sought after for its looks as well as its sound, the Nathan AirChime K5LA is constructed with five large die-cast aluminum bells with stainless steel diaphragms, mounted on their famous low profile bracket. The AirChime K5LA train horn is built tough enough to withstand years of wear and tear from rain, snow, and sun for years. Put through hours of machine time until the tone is perfected, you don’t get higher quality than these horns. In a sea of pretenders, make sure you get the real deal.

  • Genuine Railway-Use Locomotive Tune Horn!
  • Durable Die-Cast Aluminum Body
  • Stainless Steel Dual Diaphragm Technology
  • Pre-Tuned One-Piece Bell Construction
  • Reversible Bells For Easy Installation
  • Manufactured by Nathan
  • Made in the USA! Quality Does Matter!
  • Horn: Airhchime K5LA Train Horn
  • 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)
  • Port: 1/2" NPT
  • 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

Customer Reviews

5.0 Based on 4 Reviews
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Great customer service. Everything arrived on time, and was as described. They are definitely loud and sound great.


Nathan K5LA Train Horn on NVR_2_HI

If you want the best you have to buy from the best @hornblasters very happy with my setup! When they say this setup is loud they're not lying, definitely worth the money. If you would like to see or hear my setup you can find me on IG @nvr_2_hi.



Will wake the dead! ****** LOUD!

HornBlasters Nathan AirChime K5LA Train Horn Review

Completely satisfied

Had an issue but talked to Manny and customer service is outstatnding and the product is top notch. These horns are awesome and I'm happy with my purchase.