I had to replace the hard return line on my '98, 3.0 Windstar about a year ago due to corrosion. I had to get the line from the dealer. They had a heck of a time getting the right part because their diagrams aren't real specific on that part. It took a few tries but they did get it. I think it was about $60.
It was also a PITA to install because of the way it was routed. Had to remove or loosen just about everything on the pass. side of the vehicle. Got it done though. Figure I saved a ton of money too.
