Parts such as the Repair Kit: Oil Seal (6h3), Gasket,cartridge 0uter Plate (nas), O-ring (663), Gasket Kit For Lower Unit are included in the 90etln 90etxn 1990 Repair Kit parts fiche.
With a quantity of three pieces, the O-ring is the most used part in the REPAIR KIT diagram.
The Repair Kit is made up of components including this Gasket Kit For Power Head which is the most expensive.