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Pre-cleaner or air cleaner? (picture posted by a person above is picture of air cleaner itself, oil bath type air cleaner.) These air cleaners are re-produced here (in Turkey) by some mfgs as mf135 was/is still popular here.
Part numbers I have are different than the one you gave, so, I am not sure if pre-cleaner or air cleaner itself.
Pictures of pre-air cleaners (2 types) and air cleaner are like these (red ones are pre-cleaners):
(I can try to send by courier mail if you are unable to find there. You might check Sparex USA there too who import parts of Mf135 too from here.)