Yes, and it's a really easy job to do.
There is a Ducati Peformance kit which contains all the parts you need -
964062AAA - M600
Complete oil cooler kit
964289AAA - M620 MY’02/’03/’04
Complete oil cooler kit for 620 cc engine; increases heat dissipation by about 15%
Link to the catalogue is here (0.8Mb):
http://www.ducati.com/docs_it/bikes/...df/M_EU_04.pdf