With three applications this Ext.ring,r.w.pump is the most specified part.
The Lockwshr,r.w.pump is the cheapest item from this partsfiche.
Parts such as the Raw Water Pump Assy: Seal&seatasy,r.w.p, Major Repair Kit, Shaft,r.w. Pump, Capscrew,r.w.pump are included in the V6 4.3 Yems 1990 Engine Raw Water Pump Assy parts fiche.