Where does this go?

[Spitfirebuilder]

When I removed the surge tank I have a line with maybe a filter on the end of it. Where does it go from there?
Thanks

 

[HoveringHMMWV]

It's a fuel vent line (part #1 in first diagram) that connects to part #30 in the second diagram.
- HoveringHMMWV

 

[AAVP7]

Of course, it only connects to part #30 if you have the Deep Water Fording Kit with the snorkel intake. Without DWF kit, the filter´s end is just open, like in your picture.

 

[Coug]

Vent line. Filter is there to keep out dust/dirt.