The car is a 2000 and has a serial number that falls within the group where there have been variator failures due to over-torquing during factory assembly of engine. The drawing you sent shows an engineering change that probably strengthens the part at the area just above the threads where the failures were occurring. The factory has very indirectly, without really admitting to a problem, been advising changing both variators at belt change service on all chassis numbers prior to 125418. Needless to say, variator failure at the wrong time could result in serious engine damage and the kind of repair bill we all dread thinking about.Daniel is the one.
What year is your car and why new variators?