Yes, this is indeed a danger, as Hans writes - it happens fairly often on items of bigger value.. On the picture is what I got a couple of years ago.
The risk is ca $6 (my geography) in this case for two clamps.
I think I got the same parts as Hans is showing in his post (I just noticed his post now).
What I usually do while ordering parts that are visible: I ask the dealer to notify me if the PN changes because of replacement and if it does, I do not order a part. Works i n 90% of cases.
BTW: the drain hose is not correct for our cars, I think, but I do not care...