The most reasonably priced component used on the Rf900r 1995 (s) (e02 E04 E18 E22 E24 E25 E34 E37) Oil Pan - Oil Pump is the Gasket(5.8x11x1.2) (nas).
With thirteen applications this Screw is the most specified part.
Some items from this specific schematic: Gasket(16x22x2) (nas), Valve Assembly,oil Relief, Pump Assy,engine Oil, Gear,oil Pump Driven(nt:37).