Some items from this specific schematic: Pipe,breather 2, Gasket, Head Cover 1 (nas), Pipe 2, Collar (7k7).
Check out any of the thirty-eight Cylinder Head components enlisted.
With all the components that make up the XZ550R VISION 1982 (C) USA CYLINDER HEAD assembly. The Bolt, Washer Based (4h7) is the most frequently specified with twelve applications.