The most reasonably priced component used on the Ew50 2004 1s11 Belgium 1c1s1-300f1 Air Shroud & Fan is the Damper, Air Shroud 1.
The Yamaha AIR SHROUD & FAN has fourteen products enlisted in the schematic.
Some items from this specific schematic: Damper, Air Shroud 1, Cover,fan, Air Shroud, Cylinde, Air Shroud, Cylinder.