I ordered a 6PK2175 belt for my 1995 C36 AMG. This was too short and I went to a local parts store to buy a 1995 C280 belt 6PK2225 and it works. It appears the 6PK2175 part number I can find for this car must either be for a no AC or under drive pulley set up. My car is stock without a air pump. Just thought Id share this info.

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