The 2011 Volvo XC90 has 24 valves.
The 2012 Volvo XC90 has 24 valves.
The 2006 Volvo XC90 has 20 valves.
The 2007 Volvo XC90 has 24 valves.
The 2009 Volvo XC90 has 24 valves.
The 2005 Volvo XC90 has 20 valves.
The 2004 Volvo XC90 has 20 valves.
The 2014 Volvo XC90 has 24 valves.
The 2008 Volvo XC90 has 24 valves.
The 2013 Volvo XC90 has 24 valves.
The 2003 Volvo XC90 has 20 valves.
The 2010 Volvo XC90 has 24 valves.