Of all the components that make up this Gasket Kit B the Gasket (nas) has the lowest price.
With two applications this O-ring,6x1.7 is the most specified part.
Parts such as the Gasket Kit B: Gasket, Crankcase (nas), O Ring, 8 Dia, O-ring 7x1.7, Packing, Cock are included in the Z50jf Monkey Germany Gasket Kit B parts fiche.