The reason(s) that a vin # is asked for:
A) Depending on the catalog system that the user is working on - it can be required for gaining access to the catalog..
B) It DEFINATELY makes looking up your part easier. It immediately calls
out year, make, model, build options, split year availibility, build reference notes, ect..
C) Shortens the time it takes to help you (the customer) - allows the counterman instant access to all info on said vehicle.. You would be amazed at how many people have no idea what the model designation is of thier car, let alone trim level, engine code ect,...