With a quantity of four pieces, the Washer, Plate(6t0) is the most used part in the IGNITION INTERRUPTION UNIT diagram.
This schematic depicts all components used in the V6 4.3 Yems 1990 Engine Ignition Interruption Unit partslist.
The Screw, With Washer (6t0) is the lowest priced item on this Ignition Interruption Unit schematic.