The most reasonably priced component used on the Vs750glp 1990 (l) (e01 E02 E04 E16 E17 E18 E21 E22 E25 E39) Water Pump is the O Ring.
This schematic depicts all components used in the Vs750glp 1990 (l) (e01 E02 E04 E16 E17 E18 E21 E22 E25 E39) Water Pump partslist.
The Water Pump assembly is constructed from several parts from which the Case Assy,water Pump is the most expensive.