Want a train horn on your car but don't have the space? Kleinn's model 141 quad air horn delivers devastating sound with compact, easy to install construction. This air horn can fit in almost any vehicle and deliver the big time loud air horn sound you need. Easy to fit, glistening chrome finish and extreme sound; these loud air horns are the complete package. This Air Horn Kit from Kleinn Automotive includes everything you need for a complete air horn install on your vehicle. Kits include horns, compressor, tank, wiring, air tubing and switches. There is no mistaking the that genuine train horn sound. Kleinn Automotive manufactures the loudest and highest-quality horns on the market.