One more thing to mention: the same engine was installed in different cars / vans, looking quickly with the part number I've found it was also used in the Scudo (& Peugeot Expert / Citroen Jumpy) and Ulysse (& Peugeot 806 / Citroen Evasion, although it was not available in the last sibling, Lancia Zeta, as it was the most 'luxurious' one). The engine came in several configurations and have been also installed in others cars (ie. Rovers, Suzukis, Ladas etc).
So, as @varesecrazy mentionned: use the correct part number and cross reference to be 100% sure, as there were 2 different 1.9 diesel engines installed in the Ducato x230 (1905 and 1929 ccm). And they seem to be completely different. And other configurations of the same 1905 ccm engine have different flywheels! The Scudo with the same 1905 ccm engine had four different flywheels installed according to ePER.