What would this be called it's the one with the crack in it?

It is in a 2002 Ford Explorer Sport Trac if you could tell me what it is it would help a lot thank youWhat would this be called it s the one with the crack in it - 1

What crack?

The pcv tube it runs behinf the inateto left valve cover and pcv valve you have a 4.0lsohc engine parts about 65 bucks dealer itemonly