Of all the components used in this assembly the Cam Shaft Assy is the most expensive.
This schematic depicts all components used in the Ec5000dv Ec5000dve Generator Camshaft - Valve (ec5000dv(e)) partslist.
The most reasonably priced component used on the Ec5000dv Ec5000dve Generator Camshaft - Valve (ec5000dv(e)) is the Cotter, Valve.