Jasper wroteDo you mean the mudguard?
I apologize for my poor english. I mean the plastic part that holds the ECU, the elecric ignition power panel, the rear turnsignals and the plate.
Edit. I can swap it for a 888 undertail panel. I have a 888 plastic part, but i need the 851 one.
Edit 2. the part is the following:
http://www.ducati851and888.com/album.php?albumid=103