Hello to all, I have an Audi A3 2006 3.2 European Version, and it carries Mechatronic Part number 02E-325-025-AD-Z64, I have found a replacement part number 02E-325-025-AD-ZDW, the question is? what does the last three digits means? the Mechatronic I found is compatible with my car? so far the dealer have not been able to answer me those two questions.... ??? they just dont know....

Many thanks in advance !!!!