The most expensive part in this assembly is the Cover,water Pump..
Parts such as the E-7 Oil Filter - Water Pump Cover: O Ring, 46x2, Cap, Water Pump, Bolt,oil Filter, Element,set,oil are included in the Gl1100i 1982 (c) E-7 Oil Filter - Water Pump Cover parts fiche.
The sixteen Gl1100i 1982 (c) E-7 Oil Filter - Water Pump Cover component parts are all listed in this schematic.