This was built for the direct-drive version of this printer, it may work for the older bowden-tube extruders, but as I do not have one, I can't confirm this.
As with all part cooling fans in proximity of the nozzle, it must be printed in PETG, ABS, ASA, or higher-temp resistant material.
Part thickness is such that infill and walls shouldn't matter. Prints without support.
Photos show the original (gray) and my recreation (white).
The author marked this model as their own original creation.