Chances are it will not. What will damage the engine is that truck that runs over your car when the engine fails as you try to drive in front of it. Don't take the chance. Change the timing belt.
The 2007 Subaru Outback has a flat 4 engine.
The 2009 Subaru Outback has a flat 4 engine.
The 2013 Subaru Outback has a flat 4 engine.
The 2006 Subaru Outback has a flat 4 engine.
The 2003 Subaru Outback has a flat 4 engine.
The 2005 Subaru Outback has a flat 4 engine.
The 2002 Subaru Outback has a flat 4 engine.
The 2011 Subaru Outback has a flat 4 engine.
The 2014 Subaru Outback has a flat 4 engine.
The 2001 Subaru Outback has a flat 4 engine.
The 2012 Subaru Outback has a flat 4 engine.
The 2004 Subaru Outback has a flat 4 engine.