Just get a whole new hinge unit not just a pin. Chances are when the old one let go it bent the hell out of the one that is there if you opened the door. I had one break and the door almost fall off on a really cold night in a parking lot. Just about ripped my arm off trying to save it. Get a friend to help you with the replacement and to get things lined up right, much nicer than trying to balance it on a sawhorse or the like. If I recall part of the hinge is tack welded to the door so you have to pry it off after you get the bolts out, either that or mine was just really stuck for some reason.