thats an oil catch tank, search "oil catch tank" and loads of threads will show up. it stops the oil from going into your intercooler and other places.
i wonder if i can get that pipe in my mk4 cupra. i know this is the wrong place to ask but i thought maybe someone could maybe answer that question in here without having to make a new thread else where.
just found a picture and realised theres no chance as the screen wash bottle is right where the pipe bolts to the car and the battery is located in the same place as yours
thanks anyway.
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