The Washer,plug,drain 12 is the cheapest item from this partsfiche.
Some items from this specific schematic: Gasket,clutch Cov (nas), O Ring,17.3x2.4, Washer,plug,drain 12, O-ring,19.8x2.4.
The O Ring,17.3x2.4 is the most widely applied product in the CB600F HORNET 2004 (4) FRANCE GASKET KIT B ( four times ).