Full Build Guide & What's Included
How to Build a Train Horn for Milwaukee® 18v Battery
- Compatible with most Milwaukee® M18 impact drills
- Complete kit — everything included except the drill and battery
- Quad metal trumpets — real train horn sound up to 140db
- Wireless remote control included
- Premium trumpet upgrade available for even more power
- Same day ship-out
Build Your Own Portable Train Horn — Using Your Milwaukee® Drill
The DIY Train Horn Kit for Milwaukee® 18v Battery lets you transform your existing Milwaukee® impact drill into a thundering 140db portable train horn. If you like building things with your hands and already own a Milwaukee® M18 drill, this kit gives you everything you need to create your own battery-powered air horn from scratch.
This is the most affordable way to get a real drill train horn — and the satisfaction of building it yourself is unmatched.
What's in the Kit
- Quad metal air horn assembly
- High-output air compressor
- Pre-built wiring harness with remote signal receiver
- Wireless remote control
- Air hose
- 2 mounting screws
Assembly Steps
- Unscrew the drill clam shell and remove the gears, motor, and stock harness
- Fit the shell to accommodate the air compressor
- Install the new wiring harness and connect the compressor to battery terminals
- Attach an M18 battery and test the compressor
- Reassemble the shell and drill two mounting holes
- Install the horn mount with bolts and connect the air hose
- Blast your brand-new Train Horn for Milwaukee® 18v Battery!
Why Go DIY?
- Lowest price point: The most affordable way to own a real portable train horn — use the Milwaukee® drill you already have.
- 140db quad-trumpet output: Four metal trumpets deliver a deep, authentic train horn blast that rivals pre-built models.
- Full customization: Build it your way. Upgrade to premium trumpets for even more volume and tone.
- Wireless remote included: Trigger your handheld train horn remotely — just like the pre-assembled versions.
- Learn how it works: Understand every component of your battery-powered air horn from the inside out.
- M18 battery compatibility: Works with any Milwaukee® M18 battery — hours of use on a single charge (drill and battery not included).
Who Is This Kit For?
- DIY enthusiasts — you'd rather build it than buy it
- Milwaukee® tool owners — put that spare drill to legendary use
- Budget-conscious buyers — real train horn sound at the lowest cost
- Gift givers — the perfect project kit for the person who has everything
Milwaukee® and M18™ are registered trademarks of Milwaukee Tool. BossHorn is an independent company and is not affiliated with, endorsed by, or sponsored by Milwaukee Tool.
Build it. Blast it. Own it. The DIY Train Horn Kit for Milwaukee® 18v Battery is real train horn power — assembled by your own hands.
