2002 audi a6 4.2

my master cylinder was shot, so I replaced it. I seated it in fairly easily and everything went smooth. But as I pump the brake fluid leaks out of the fitting closest to the front of the car on the side of the master cylinder (the metal line coming from the abs module)

There are 2 lines that connect from the master cylinder to the abs module (I think thats what it is) and only the 1 is leaking. I have no idea where to get this part. Is this something that I must get from the dealer? I live out in the country and pick-a-part places are quite far away.