that part number was dropped years ago having been replaced 3 times - no date for the 1st replacement but 2002 for the 2nd and 2007 for the 3 time
cant find the part number you gave me under A3, golf or bora - probably it is off the main screen as being replaced years ago - however the part thats replaced it in the end was
06a 145 713 F which is for the AUM AUQ which has the k03s
other part numbers are
06A 145 713 D - this was also replaced to the above
06a 145 713 DX - Thos was replaced by FX at the end in 2007
i have looked under the additional info for the part number you gave it has exhange info shows a list with the part numbers ive used above but cant be certain if it definetly is a 03s.
basically AUM and AUQ will have the k03s these are all post 2001