Some items from this specific schematic: B/brg Rad N/com, Plate Comp,thermo, Wash,special,12mm, Bolt Flang 6x12.
This WATER PUMP assembly utilises two Clamp,breather Ho(s) - the highest specified component.
The most reasonably priced component used on the Fes1259 2009 (9) England / Mkh Water Pump is the Washer,6mm.