Yes it is. I'm not sure which photo you have looked at? If it's the horns on the supercharged Disco, the air supple is generated by the air compressor in the bottom left of the photo. The air line then connects to the bullbar which doubles as the air reservoir, the air line then takes off again on the other side of the vehicle, from a nipple fitted underneath the bullbar. It then connects to the horns. On the other disco, the air supply from the compressor fills a tank attached inside the bullbar and then the supply goes to the horns.cellulararrest said:is that an AIR HORN under the hood?! :buttrock: