FAP Fiat Ducato Adaptor Ring in White. This unit allows the fitter to make use of the approved filler neck that's already fitted to Fiat Ducato / Peugeot Boxer vehicles. By using this adaptor ring the fitter is not actually altering the base vehicle, thus all approvals remain intact. The unit does not come complete with Fuel Cap. Part Number 9138SX28 Ref 26682