If you post your VIN, I'm sure someone would be happy to look it up in the EPC for you. They will find both the original P/N as well as any that have superseded it. Alternatively, I know there are some Russian sites that have the EPC available for use, but I don't know how often they are updated, etc. You can give this one a try if you like: Index to Mercedes EPC Parts Info and Diagrams Everything Benz

Good luck.