Some items from this specific schematic: Valve,oil Oriffce, Bolt, Flange,6x12, O Ring, 14m/m, Collar,o Ring.
Of all the components that make up this Cylinder Block the Screw,tapping,4x8 has the lowest price.
This CYLINDER BLOCK assembly utilises seven Bolt,flange,8x25(s) - the highest specified component.