Some items from this specific schematic: Cover Comp,breath, Washer,plug Drain 14, Bolt,flange,6x14, Clamp D 12.5 Tube.
The Breather Cover assembly is constructed from several parts from which the Cover Comp,breath is the most expensive.
Of all the components that make up this Breather Cover the Washer,plug Drain 14 has the lowest price.