Some items from this specific schematic: Cover,r.air Intak, Bolt,flange,6x16, Fender,r.inner, Cover,l.air Intak.
Of all the components used in this assembly the Fender,r.inner is the most expensive.
The most reasonably priced component used on the Trx350d Fourtrax 1987 (h) Italy Sul Front Inner Fender is the Bolt,flange,6x16.