Factory OEM replacement for the Concours petcock, Kawasaki part number 51023-1388.
If you have a leaky petcock, often times a rebuild kit can solve your problems. It's a relatively inexpensive solution for many. Unfortunately, there have been more than a few people frustrated with the results - it still leaks.
If you don't want to run the risk of an unsatisfactory rebuild, go all the way with the original equipment manufacturer's replacement.
In stock and ready to ship!