Does do not seem like VAG numbers
See if this is what you want ( since it's a bit tricky to translate technical terms from one language to another)
030 109 119 S
And for the tensioner the part # is 030 109 243 K ( except if you have the AEV engine, which i doubt)
And might i ask, when you have to change this, can you just change the fan belt and the belt tensioner ( 2 items) or on top of that you have to change anything else ? Like the alternator belt.
Just asking since im trying to buy all the parts for this before the car goes to the mechanic
Pedro
Or you could also mean this:
