Nathan Airchime K5LA Frankenstein Train Horn


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!

Frankenstein Train Horn?? Yes, you read that right! Here's what's going on... over the years here at HornBlasters we have had Nathan horns arrive that were PERFECT all the way to let's say not so perfect! The not so perfect ones were always put to the side waiting to be fixed, cleaned, repaired, etc... Frankenstein K5's are now being assembled and offered, constructed from all of these leftover parts. 

The most important and popular question; Are they loud? You bet your ass they're loud! Does it sound like the original K5LA sound sample? No, it does not.

Why is the sound different? Here's a short train horn lesson for you. Each horn bell has a number. The most common K5LA, like the $2399.99 horn on our site, uses bell numbers 1, 2, 3, 4, and 5. That bell combination produces a really sweet and loud train horn chord. What bell numbers will Frankenstein have? No idea, no guarantee. We will make every effort to mimic the 12345 originally found on the K5LA, but you also might end up with 12334 or 12233 or 11223 or 22333 or something similar. 

Also, we all know Frankenstein wasn't the most handsome guy around so the Frankenstein horn will be just as ugly. Chips, scratches, repaired threads, and a raw finish. Or for a little more you can have it painted black. Don't worry about Frankenstein holding together though, it will arrive already tested, with all new hardware, and fresh diaphragms. 

If you want to get into the Nathan horn game on the cheap, this is the perfect way to do it!

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 AirChime K5LA train horn. While there are many kinds of train horns, the AirChime K5LA train horn is the golden standard that other train horns attempt to duplicate. With its massive size and intimidating tone, the AirChime K5LA train horn 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 AirChime K5LA train horn 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. It’s really no wonder why the K-series has been the horn of choice for locomotive companies for decades. 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″ (412.75 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

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