Please see attached file for Porsche spacer partnumbers. Right click and download might work better in some cases than viewing in browser.
Notes:
999 182 001 02 alloy wheel nut raw
999 182 003 36 alloy wheel nut black finish
N 020 112 1 steel wheel nut, identical to Baywindow wheel nut, used for motorsport and/or attaching spacer to hub
996 361 605 90 is a 5mm spacer, stock GT3, this spacer does not have a centering collar, all the others do. There are differences in centering dia.
Prices are in euro, each. You can order them at your local Porsche dealer but of course I can supply any Porsche parts you need.
Cheers,
Brian
www.karrera.net