You want either PN 901130011 (item 10) or 901000316 (item 13). Looks like they switched bolt PNs at some point, so depending on when your car was built (before or after Aug 2006 when they switched) will determine which one you need. Both may work, but bring both PNs to your dealer and they can match against your VIN to make sure you get the right one.
Oh, and bookmark that site. It'll come in handy more than once!