The 2008 Nissan Xterra has 24 valves.
The 2010 Nissan Xterra has 24 valves.
The 2003 Nissan Xterra has 16 valves.
The 2005 Nissan Xterra has 24 valves.
The 2004 Nissan Xterra has 16 valves.
The 2012 Nissan Xterra has 24 valves.
The 2014 Nissan Xterra has 24 valves.
The 2002 Nissan Xterra has 16 valves.
The 2011 Nissan Xterra has 24 valves.
The 2013 Nissan Xterra has 24 valves.
The 2009 Nissan Xterra has 24 valves.
The 2001 Nissan Xterra has 16 valves.