Nathan AirChime K3 Train Horn

Authentic Locomotive Horn & Loudest Available!


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!

Looking for the best three chime train horn you can buy? You have come to the right place! The AirChime K3 train horn brings the raw power and volume of a modern-day diesel locomotive with a classic tone that dates all the way back to the 1950's. Crafted from die-cast aluminum and subjected to hours of machining until perfected, the AirChime K3 train horn is built tough enough to withstand years of wear and tear from rain, snow, and sun. It’s really no wonder why the K-series has been the horn of choice for locomotive companies for decades.

You don't get any louder or a better tone than with the real thing. Our AirChime K3 train horns come straight off of diesel locomotives, put through a rigorous reconditioning process and stripped down to a raw finish, ensuring that while it's been tried and tested on the rails it comes to your door as good as new. With a smaller installation profile than the other K-Series horns, the AirChime K3 train horn is perfect for those that want real train horns but might not have the room for a larger set.

***All Nathan Airchime Horns have a 7-10 Business Day Lead Time!!***

  • Genuine Railway-Use Locomotive Tuned 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 K3 Train Horn
  • Horn Length: 18.25" (463.55 mm)
  • Horn Width: 16.25" (412.75 mm)
  • Horn Height: 9.75" (247.65 mm)
  • Horn Weight: 32 lb (14.515 Kg)
  • Port: 1/2" NPT
 1995 Ford F350 Powerstroke 2016 Dodge Ram 3500
*Check out our Install Gallery for more Installs!
  • 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!
  • HornBlasters Satisfaction Guarantee
    HornBlasters 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