4 Trumpet Air Horn Compressor Tank Gauge Kit 1.6Gal 150PSI For Train Truck Van

  
Trumpet Size: 6.5"/9.06"/11.61"/13.78" 3.54. Interchange Part Number: Air Horn. Fixing a broken car horn can often be a do-it-yourself project. You may choose to replace the broken horn with the exact horn originally installed in the car or you may choose a universal car horn.