If you are referring to a Japanese Kabuto, then it WONT die because it is a helmet. Helmets DO NOT die, they have no life therefore they can not die.
If you are referring to the Pokemon #140 Kabuto, it is suspected that Kabuto was a pre-historic Pokemon that became extinct thousands (or even millions) of years ago. In the Pokemon handheld games you get the chance to revive Kabuto, by taking the Dome Fossil to a scientist in Cinnabar Island.
Kabuto Yakushi is not dead; he fused some of Orochimaru's remains inside of him in order to become more powerful. He then fled just before the leaf ninja could capture him. He has not been seen yet but he didn't die, I guess he's just very good at hiding.