The 2009 Toyota Highlander-Hybrid has 24 valves.
The 2008 Toyota Highlander has 24 valves.
The 2012 Toyota Highlander has 16 valves.
The 2005 Toyota Highlander has 16 valves.
The 2014 Toyota Highlander has 16 valves.
The 2010 Toyota Highlander has 16 valves.
The 2011 Toyota Highlander has 16 valves.
The 2001 Toyota Highlander has 16 valves.
The 2004 Toyota Highlander has 16 valves.
The 2007 Toyota Highlander has 16 valves.
The 2013 Toyota Highlander has 16 valves.
The 2006 Toyota Highlander has 24 valves.