Of all the components used in this assembly the Oil Pump Assy is the most expensive.
The twelve Yp250 1998 4uc3 Greece 284uc-300e1 Oil Pump component parts are all listed in this schematic.
A sample from the products for the Oil Pump include: O-ring (5x4), Oil Pump Assy, Strainer, Oil, Plug, Drain.