I have a 2002 A6 with the 4.2. I am trying to replace the TCU but I am having trouble finding the right one I think. The one currently in the car is part number 4d0927156ea. I can find it online but it says it is for the European models only, not for USA. I bought this car used in 07 in Colorado. Should I be looking for a different part number or do I have a European car? I am now in Connecticut, where is the best place to get one?

Thanks,
Kelly