This is another one I need. Same situation.

   This is the oil feed line for the 1990 1991 turbo.

   Does anybody have one they can sell?
   Does anybody know the part number?

   BTW has anybody run Mobile One in a turbo engine?
   I would think it ideal as it is good to 500 F while
   regular mineral oil starts coking around 250 F.

   Paul Lamar



I have been through a number of iterations on that one.  First I flared
the stock line, which was a -5 size, and found a -5 to -4 adapter for
the rest of my system.

Most afte rmarket turbo oil inlet plate adapters fit.  Found many places
online like Jegs..  fits anysize AN you want.  ..  But Those leaked some.

Last 100 hrs I have been using a steel 45deg  1/8NPT to AN-4.  That is
the simplest, lightest, cheapest, and no leaking so far.  The oil hole
at the top of the turbo has NPT threads (on my TO4 center section)