Might be a stupid question, but does anyone know what the name of the hose that goes from the top nipple of the coolant reservoir (near the cap) to the overflow tank located in the passenger wheelwell? I assumed it was called an overflow hose.

I have a friend at a parts store who can't seem to find the part.

On my car, (1995 E320), the hose I am speaking of is braided. Is it necessary to replace this hose with the same type, or can I get away with any old radiator hose as long as it fits?

Thanks