Hi , Can anyone help i have been trying to get this part but seems to be backordered everywhere ? its a water pipe there are 2 at the back of the engine of the s3 which are covered in a silver heat sheid. The part number is 8L9 121 157D does this come with the heat sheid ? and is there any where else to buy this as its strange that i cannot get when its just a bit of hose ???