Does anyone recognize the diode with the green material on it in the middle of this picture?
Customer would need to provide a better picture, what is the board part number, description and manufacturer would increase the chance of locating a part.
I’m going to guess that’s a standard diode of some type with some ferrite rings glued onto the leads. More of an assembly than a standard product, and difficult to replicate insofar as the ferrites likely don’t have any markings on them.