Does any body know what kind of hose I need to by for my 2000 32 fountain with 502's from the engine to the guage. I have tried to blow out the line from both directions....but I have had no luck!!!!! I am planning on replacing the line but I forgot the notes I made at the lake house. I think it was about 3/8 O.D. (black hose)but I am not sure about the I.D.for the fittings.

Any help would be great I would like to pick it up this week before I go back to the lake.

Mine is the same as speedo hose.