Of all the components that make up this Gasket Kit B the Washer,plug,drain 12 has the lowest price.
Parts such as the Gasket Kit B: Gasket,starting G (nas), Washer,oil Bolt, Gasket,starting G (nas), Gasket,crankcase (nas) are included in the Trx350 Fourtrax 4x4 1987 (h) Usa Gasket Kit B parts fiche.
In this schematic the "Washer,oil Bolt" is used most often.