I purchased this horn to replace a set of Howard Horns. The Howard Horns cost at least 3x what I paid for this air horn yet the most important part, the compressor, appears to be the same. The install was easy and the sound is just as loud as the Howard Horns. I recommend this product - it is excellent value. The horn is clean; there are no hanging tubes or wires and it doesn't cover up much of the engine. I did this install on a 2008 Harley Davidson Ultra.