On a stock '85 (like mine) that's where the fuel filter goes. This is a
small square plastic filter with different sized inlets and outlets.
Putting one of these in will fix your leak.

Later vans (I think '86 onward) use a larger metal canister filter *after*
the fuel pump... Either your van has been retrofitted to the later style
filter, or you have no filter at all.

Tim

At 07:27 AM 2/2/2005 -0800, you wrote:
>My Vanagon, 85 1.9l Automatic California, has a small diameter hose
>running from the fuel tank, meeting a plastic adapter which connects
>to a larger diameter fuel hose which runs to the fuel pump.
>
>This plastic piece has cracked and started leaking gas.    I called a
>VW parts counter and they couldn't figure it what I was talking about.
>
>Does anyone know the part #?  Or perhaps where to find a replacement
>part that is metal?