2002 Western Star 4900SA. 2003 Western Star 4900SA. 2004 Western Star 4900SA. 2005 Western Star 4900SA. 2006 Western Star 4900SA. 2007 Western Star 4900SA. 2008 Western Star 4900SA. 2009 Western Star 4900SA.
The HVAC Pressure Switch UAC is ideal for Western Star 4900SA models from 2002 to 2013.
