On this parts fiche the Gasket, Valve Seat (nas) is the most specified component.
The Vz150/175/200tlrb 2003 Repair Kit 1 consists of eighteen pieces with the Power Head Gasket Kit (nas) being the most expensive.
Some items from this specific schematic: O-ring (6e5), Gasket, Manifold 1 (nas), Oil Seal (6e5), Power Head Gasket Kit (nas).