I would suspect the orings in the hose to be bad, not necessarily the fitting. With that said, I don't know if the orings are available, or the fittings and hose come as a set. There are two fittings for each hose under the valve covers. These are on the 03 and early 04 MY, and they are a version of the famed stc fitting. "stc" printed right on the side. "snap - to - connect". They work like quick connect fittings you see on air hoses. The thing is, they see 500-3000 psi.
Sent from my phone that somebody didn't help me get.