Some items from this specific schematic: Plug,oil Filler, Shaft,water Pump, Bolt(6x25), Bolt(6x30).
The Pin is the cheapest item from this partsfiche.
The thirty-nine Rm250 2006 (k6) Usa (e03) Crankcase Cover- Water Pump (model K1/k2) component parts are all listed in this schematic.