Coolant header tank & silicant bag

[GH18]

Did Audi fit one of those silicant bags inside the coolant header tank like the rest of the VW group cars up to 2019/20?
I can't see any "Mit Silikant" writing on the tank to indicate they have but want to be sure what the situation is before ordering a new tank. For those of you who have replaced the tank do you have any recommendations for where to buy as I don't want a cheap one which is liable to split after a short time?

Thank you,
Gary