AirChime K3 Train Horn
AirChime K3 Train Horn Photo AirChime K3 Train Horn Photo AirChime K3 Train Horn Photo AirChime K3 Train Horn Photo AirChime K3 Train Horn Photo AirChime K3 Train Horn Photo
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Hearing protection required
Low Price: $1,049.99
Brand New, Available

AirChime K3 Train Horn

The AirChime K3 has long been the leader in commercial railway horns. This horn is the most commonly used horn on diesel locomotives across the US and is the same horn everyone’s familiar with when a diesel locomotive barrells down the tracks.

This K3LA is an American tuned version of the K3 with a low-profile mount to make it easier to install on trucks (not intentionally). This horn is one of the most popular on railways all over the USA and has been since 1977. The K3LA is an amazing horn and delivers unbelievable power. Honestly, it’s very hard to describe just how loud these horns are. If you want a real horn, this is the answer.


  • Durable Construction
  • A real train horn!
  • Extremely Loud


K-Series Power: K-Series Train Horns Deliver The Most Out Of Any Train Horn! Ever!

Developed in the 1950s this K-series horn is a blast from the past. In fact although there are many variations of the K3, the basic design has stayed the same since 1954. This horn is just about indestructible; die cast out of solid aluminum and powered by heavy duty stainless steel internals. This horn can take a beating!

Still not confident about these horns? They were designed to be mounted on diesel locomotives and be exposed to the elements, snow, ice, rain, wind, and diesel smoke and still sound great! In fact these horns were designed to be clearly audible from up to 5 miles (calm wind, clear skies). The horns are virtually maintainance free and are designed to be rebuilt with absolutely no tuning necessary.

Revolutionary Train Horn Design

The K-series horns boast an impressive design. These kettle-drum horns were designed to sound louder than their predecessors. Although, they are not quite as deep as older horns, these horns are 11 dB louder at 100ft than the P-3 was and play a much more alerting tone. To put it simply, these horns are designed to catch peoples attention.

This horn features an innovative technology unheard of in other horns. The diaphragm housing of the horn actually contains two discs. This may be Greek to some, but what it means is the horns don't taper in tone like normal horns. Regular horns sound a lot more high pitched at high pressure than they do at lower pressures. With a K-series horn you're all full-on or full-off.

The Most Authentic Train Horn For Your Car Or Truck

If you want a real train horn, this is the most authentic one you can buy. Since its the most popular horn used on locomotives to this day you will sound exactly like a train. In fact, with one of our kits you'll be louder than a train. The reason is because our horns run at a higher pressure than locomotives run theres (150-200 PSI vs. 130 PSI). Quite simply, if you want to sound like a train, and we mean sound identical to a train, this is the horn you need to buy.

K3LA Videos

K3 vs. P3 Horn

With a Manual Valve

On a Golf Cart

Kit Includes

  • AirChime K3LA Real Locomotive Train Horn

Product Notes

The standard finish on this horn is unpolished die-cast aluminum. The horns are easily painted, or powder coated but they are not supplied this way.

This horn does *not* come with a valve. You must either purchase or supply a valve in order to operate this horn with your air system.


Use this product in a safe and responsible manner, at a distance of at aleast 100 feet from others.

Proper Hearing protection must be worn when using this airhorn. Hearing loss or permanent damage may result from unsafe use.

Never operate this product in a closed environment or close to pedestrians or others.

It is the consumer's responsibility to comply with local noise ordinances and D.O.T. sound level laws.

Prop 65 Warning: This product contains chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

Click Here To View Other Train Horns & Air Horns


Part Number
18.25″ (463.55 mm)
16.25″ (412.75 mm)
9.75″ (247.65 mm)
18 lb (8.16 Kg)
½″ NPT

Support Documents

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All documents are provided in Adobe PDF Format. Click here to download the viewer.

Support Document IconK3 Complete Kit Manual Wiring/Plumbing Diagram