Well - Porsche has let us down again and the deflector springs are NLA. Part numbers are 928 564 057 02 & 928 564 058 02. Even used are hard to find. The main metal part with the spring is reusable but the lower plastic base becomes brittle with age and cracks - this renders the part use less. #10 Left & Right on the PET Drawing. Worry no more - we now have replacement bases which are made from a better grade material. They are $75 a pair. Two supplied for use Left or Right. Very easy to fit. Remove the small C clip, remove the pin and reverse the process. I suggest putting the complete part inside a gallon baggie so when the circlip goes "ping" you do not lose it across the other side of the workshop.