yep, like Tank said, mine came with a 1/2" valve upgrade as part of the kit. Another plus, it is not a gravity type valve that can only mount one way. It can mount sideways, upside down, etc. Really lets A LOT of air thru my horns. I have yet to even get my tank to 200psi. I did like Tank, wired into the steering horn button, used a relay thru an upfitter, so you can switch between the train horns or stock horn. Wired another upfitter to my relay for my compressor. I don't need the compressor all that much, so no need to have it pumping away everyday I am in the truck if not necessary, will hopefully add some life to the compressor.