Scion xB was created in 2003.
its under the hood to the right (just next to the battery)
To bypass your ac you can use a Valuecraft brand belt part # 360k4
The 2010 Scion xB has 16 valves.
The 2004 Scion xB has 16 valves.
The 2014 Scion xB has 16 valves.
The 2006 Scion xB has 16 valves.
The 2011 Scion xB has 16 valves.
The 2012 Scion xB has 16 valves.
The 2008 Scion xB has 16 valves.
The 2005 Scion xB has 16 valves.
The 2013 Scion xB has 16 valves.