Hey folks!

So this is the fuel pump I have from the original config when I bought the Wagon with the F134 engine. I would like to use this one if possible. What are the 2 lower inlet ports for? One of them , the previous owner had plugged off. I already have the in and out lines connected, so trying to understand the additional ports????? Thx for any help here!

Screenshot 2024-06-23 133534.jpg