Audi A2 3L 1.2tdi - G240, G239 Teilenummer - part numer

G240 potentiometer on my A2 3L is faulty and needs to be replaced it seems like a simple task - 2 bolts and basic setting BUT i have spent hours searching for the part numbers for this little poti with no luck.

Please share a part number or knowledge where to buy one if you know.