In Naruto how many hearts does Kakuzu have?

Question

When the Kimba was first aired in the U.S. in the ’60′s?

Answer 1

Kakuzu can hold up-to 4 hearts in total even if he losses one he can replace it with someone's else heart.

He can even detach his heart to a beast like creature which has the users ability
With the heart he also gain the ability of the user.