There are 3 in there and I'm going to assume it's the one going from front to back (blade or trailing arm, depending who you ask). If that's the case, no and yes. It's a pressed in bushing and you can not order just the factory style bushing. Ford and a new blade is the only option that way.
But it you wish to go with Polyurethane you can get just those bushings. Burn the old ones out and press the new ones in. There is a write up on here somewhere that has pic's and how-to for the full poly kit.
Each blade from Ford is roughly $109, full poly kit is about $110