This schematic depicts all components used in the Cr250r Elsinore 1986 (g) Usa Water Pump partslist.
On this parts fiche the Ball,steel, #13 is the most specified component.
A sample from the products for the Water Pump include: Impeller,water/p, Oil Seal,12x22x5, Bolt,flange Sh 6x, Separater,w/pump.