Where can i get the original wheels for a 2005 scion xb?

[jonel a]

Factory OEM Alloy wheels.

[TheDalaiLloyd]

Try a Scion enthusiasts forum before ebay. Your best bet would be something like:
scionlife.com
scikotics.com
scionride.com

They all have private party classifieds on their forums, where members sell their parts.

[Ms. SunShine!]

locally.... junk yard or the dealership. or try searching the internet. try craigslist.org. there are tons of things there for sale, free, and trade.