Part name?

Truck is a 1987 f150 5.0l 90k miles on it. I am wondering what a certain part is called. It is located on the right front fuel rail. It is a little wider than a beer can and about as tall as one there are two fuel lines that run into it and two comes out and one goes into another pump or something and the other one goes up to the fuel filter. I was wondering what the part's name is so I can replace it as it is leaking gasoline