It's all the same part number. I found that all four had to be cut slightly to get them to fit in the slots perfectly. Though that's not uncommon with OE parts, I had to do the same thing with some felt sunroof seals with the MB star on them.

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'81 MB 300SD, '82 MB 300D Turbo (sold/RIP), '04 Lincoln Town Car Ultimate

Sooner or later every car falls apart, ours does it later!
-German Narrator in a MB Promotion Film about the then brand new W123.