The Honda GASKET KIT A has ten products enlisted in the schematic.
The Seal Valve,stem is the most widely applied product in the CB400ND 1984 (E) NORTHERN EUROPE GASKET KIT A ( four times ).
Some items from this specific schematic: O-ring,40x2.5, Gasket,cylinder (mca), O-ring,8.5x1.7, Gasket,exh.pipe (nas).