727 Automatic coolant line Fitting

Need some help locating a fitting for the coolant line in the front side of the tranny. It's a small brass fitting and I can't stop it from leaking so I'm trying to locate a new one. Stopped at a local Dodge dealership and the numbers they have are obsolete. Saw a couple on ebay but don't know it they are the right thread to screw in the tranny or the coolant line.