Item: Honda CB500T / CB550F Petcock
Why You Need This: The Honda CB500T has a few unique parts on it that are not shared with its predecessor the CB450. The gas tank is specific to the Honda CB500T and it has a very specific petcock that is obsolete. Similarly, the CB550F model used the same tank thread and petcock style. Well we have figured out a simple work around to allow your Honda CB500T / CB550F fuel tank to be usable once again. This petcock only features one outlet so a 1/4" T-fitting will have to be used to spit the fuel between the two carbs in the case of the 500T, and the two carb pairs on the 550F.
Installation Tip: If you're crafty enough it is possible to drill & tap the petcock where the 2nd fuel tap would normally go. You can see on the valve body where the casting allows for either one or two fuel lines to connect. Of course, the easier way would just be to pick up a tee from the plumbing section of your local hardware store.