fabricator

Here is some usefull information regarding factory HID bulb replacement, since there are more Honda dealers in the country than Acura, this is a alternative option for purchase. Granted most upgrade or look for a cheaper option, here it is for the Strict OEM guys and gals.

Part#33116-SL0-003
04-08 TL Base and Type-S(though i believe honda uses these bulbs in all their HID equipped models, not 100%.)

This part number crosses over to Honda now.
(first model year for HID in a honda model)
11-12 Odyssey Touring and Touring Elite.

so if your closer to a honda store their you go, a viable alternative.

fabricator

Did some more searching...this part number is the same for the following:

2002-2005 NSX
2007-2011 RDX (all trim levels and packages)
2005-2011 RL (all trim levels and packages)
2004-2012 TL (all trim levels and packages)
2004-2011 TSX (all trim levels and packages)

thats the applicable list..