D2 have no replaceable fuel filter. The fuel sender unit is a whole. There is a coarse mesh outside. If you take it all apart there is a very very fine mesh attacjed to the pump pick up. the pump sucks from there. The pump outlet connects to a filter surrounding the whole diameter of pump motor and from there exits to fuel pressure regulator and from there to the mail fuel lines.
This video I found (could be better) shows you the different filters. There is at least one guy who renewed fuel pump motor.
best regards