Donaldson USA doesn't seem to know these exist. I reached out to them multiple times asking about them. I either received no response or something like, we don't have access to that part number. I went through a place in Oz who stocks them and found a deal. It was last year sometime when I bought mine and believe it was like $800-ish USD shipped. Try getting on the 200 Series Group on FB and do a search.
I am pretty sure that the Donaldson US route is complete a waste of time.
I am pretty sure that the Donaldson US route is complete a waste of time.