On this parts fiche the Washer,sealing,6. is the most specified component.
The lowest price component in this Gasket Kit B parts-list fiche is the Washer,plug,drain 12.
A sample from the products for the Gasket Kit B include: Gasket,water Pump, O-ring,24.4x3.1, O Ring,48.1x3.6, Washer,sealing,34.