The twenty V6 4.3 Yems 1990 Engine Oil Filter - Oil Gauge component parts are all listed in this schematic.
This Header,oil Filter is the most expensive of the items that make up this Oil Filter - Oil Gauge assembly.
Some items from this specific schematic: Clamp,suprt 1-7/16, Adapter,dip Tube, Bolt 3/8-16x3/4", Header,oil Filter.