Hi everyone. I need some help. I have a split in this hose

. Does anyone know what its called the Y shaped one at the front, what it does and where I can get another one? The car is a 150AUM gti with revo. Also would it be easy for me to fix bearing in mind I am a complete novice where it comes to fixing cars

. If not is expensive to get a garage to do. Still on a student budget at the moment

