On this parts fiche the Bolt,flange,6x28 is the most specified component.
The Washer,plug,drain 12 is the lowest priced item on this Oil Filter/oil Pan/ Oil Pump schematic.
The Vfr750f Interceptor 1989 (k) England / Mkh Oil Filter/oil Pan/ Oil Pump consists of thirty pieces with the Pump Assy.,oil being the most expensive.