Disconnected hose - part identification

[50iBMWguy]

What appears to be a vacuum hose or something related keeps detaching in my f15 50i due to what appears to be a broken coupling. I’m looking to determine the parts to replace but haven’t found the respective diagram so I’m hoping i’ll have better luck here. I have a photo and will try to add it, but if I can’t its 1 of 2 hoses that go over the engine block just under the plastic engine cover. Please feel free to move my post if there is a more appropriate spot. Thank you!!

[White94RX]

Sounds like maybe the crank case ventilation lines?