fifty-four components are shown in this Ls650 Boulevard S40 2008 (k8) Usa Californi Canada (e03 E33 E28) Cylinder Head exploded diagram.
Some items from this specific schematic: Gasket(5.8x13x1.2) (nas), Cushion,r Cap, Pin(8.4x11x14), Head Assy,cylinder.
The Cylinder Head is made up of components including this Head Assy,cylinder which is the most expensive.