The Washer,plug,drain 12 is the lowest priced item on this E-7 schematic.
Some items from this specific schematic: Washer, Sealing, Clip B12,tube, Plate,breezer, Clamp D 12.0 Tube.
thirty components are shown in this Cn250 Fusion 2006 (6) Japan Mf02-230 E-7 exploded diagram.