Turbo coolant supply line repair ?

[Martin Pot]

Hi there, simple question.
I am replacing the rubber section on the turbo coolant supply line, on the
'86 5KCSTQ.  I have removed the line and cut the crimp fitting off. Then I
pulled the little rubber section off, and to my surprise, it has a nylon
tube inside the rubber line. This plastic or nylon tube is not bonded to the
rubber.
I had planned to go to Autozone  and get a piece of very heavy duty line,
but now I am not sure what I should be asking for. Is there line like, this
commonly sold off the shelf, and what is it called, fuel line may be?
At first I thought I will buy a whole new line, swap it and repair the old
one at my convenience. Dealer item only, and with a $30.00 list discount
still $130.00.

Thanks,Martin.
'86 5KCSTQ Prl
'91 2CTQA    Prl
'91 2TQ         Maroon