New, coated. I checked the parts fiche on the o-ring and it's not listed. It's shown as a separate part in the workshop manual though. Got a part number by chance? I plan on calling Ducati about it either way.New or used carbon tank?
Make sure it's coated on the inside with Caswell or something like it, Ethanol will eat your carbon tank otherwise and you won't like the result of it......
OEM clamps on filter don't have to be replaced if you get them back to crimp, otherwise just use good stainless hose clamps.
A fresh fuel pump o-ring is a good idea, everything else just swaps over form the stock tank.
Already got on on my OEM tank thanks! The stocker was all twisted up.+1 on the Caswell . Not only will it prevent leaks that will ruin your paint--but the ethanol does funny things to the CF that causes the weave to bleed through the paint.
This is nice to have too:
CORSE DYNAMICS Adjustable Reinforced Fuel Tank Bracket: 848, 1098, & 1198
Its much more beefy than the stock bracket and adjustable to allow for production tolerances.