Some items from this specific schematic: Hose,oil(l:50), Gasket,oil Pump (nas), Clip, Pump Assy,oil.
With three applications this Clip is the most specified part.
This schematic depicts all components used in the Tr50s 1998 (w) (e02 E04 E22 E26 E34 E53) Oil Pump partslist.