Some items from this specific schematic: Cover,oil Pump, Nut, Oil Filler, Bolt,flange,6x32, Cap,breather Chbr.
The most reasonably priced component used on the Gv150k1\a1d\1088801 Cylinder Barrel/oil Pan is the Washer,plug,drain 12.
The Cylinder Barrel/oil Pan is made up of components including this Barrel,cylinder which is the most expensive.