part number

I am trying to source the N/S (passenger side) wing mirror mechanism on my 2004 C Class w203. I obtained one from an overseas supplier but although it stated that it was for the W203 2000-2004 it was incorrect. The supplied version stated "with memory", and had the number 41-3133-401. Can this...

Looking for part and part number fo ABC pump assembly for R231 Vin WDDJK7DO8DF018619

Can anyone source a part number for the above, please? Or tell me how I could go about it. I can't readily find the part on the .ru site let alone the correct part number :( I want to retro fit one to my Merc but don't want to just have a wild punt on eBay and end up with the wrong one...