Cub discontinued that housing about 4 years ago so all that is out there is what is in dealers stock rooms
However it is a simple housing so if you still have the shatany fabricating engineer can whip you up one from steel pipe for less than the price of a new one
The one a customer made was just 2 short pieced of steel tube one boled in the other to make the shoulders to locate the bearings
Then a pipe flange was welded to the tubes and drilled to locate into the existing holes in the deck
HE uses bean cans to make the bearing protection cups.
They last a couple of seasons & he is happy with the work.
Hardest part was finding somehwere that had scrap tube of the right diameters .