Of all the components used in this assembly the Camshaft-valve,exhaus is the most expensive.
Of all the components that make up this Camshaft/tensioner the Bolt,flanged,8x25 has the lowest price.
Some items from this specific schematic: Bolt-flanged,6x25, Camshaft-valve,exhaus, Bolt,10x23, Sprocket,camshaft,48t.