HornBlasters Nathan Airchime K3 544K Train Horn Kit - 5 Gallon 150 PSI - Authentic Locomotive Horn - Capable Onboard Air System

Still have these horns on my semi mounted to the frame under the truck. Have had to replace the pump because of bad placement in a storage box on the passenger side sucked in some salty snow and burnt it up. But these things are loud, and the best on the market. These are not your toy around haha kee kee funny horns but the type that anger people when you hit them and man do I enjoy them. When the kids hit that arm pump they instantly regret it and parents fund it hilarious. They use so much air I have to use the tank it came with so I don't drain my main air supply for the tractor and trailer. Want to wake up a whole neighborhood at night? Yep. Want to scare any car that pulls put in front of you? With ease.