Yes, it is part of the PCV system. Are you looking for the hose that goes down to the head? Or the hard cross-over hose? The hard line connects both of the secondary breathers on the head and it also has a T into the turbo inlet hose. These are all dealer only items. However, if you need the section that goes to the head, then ANY emission acceptable rubble line will work. The OEM hoses are $$$$ like $40 for what you have noted.