The Collar(1yu) is the most widely applied product in the CW50N 2005 2B73 SLOVENIA 1D2B7-300F2 AIR SHROUD & FAN ( three times ).
Some items from this specific schematic: Damper, Air Shroud 1, Bolt, With Washer, Cover,fan, Screw (2e9).
The Air Shroud & Fan is made up of components including this Air Shroud, Cylinde which is the most expensive.