Lift pump?

[Waterloo]

The fitting you are looking for looks like this... But, It will be brass.



You can get a female end to hook up test equipment at FleetPride or a Parker Exotic store. You can order on line, but you need to know the size. Best way, is to remove and take with you. Or, go to your local dealership and find out what size their mechanics use... If they even know what it is for. Good luck.

Hope this helps.