The 2003 Toyota Sienna has double overhead cam (DOHC).
The 2007 Toyota Sienna has double overhead cam (DOHC).
The 2010 Toyota Sienna has double overhead cam (DOHC).
The 2008 Toyota Sienna has double overhead cam (DOHC).
The 2006 Toyota Sienna has double overhead cam (DOHC).
The 2005 Toyota Sienna has double overhead cam (DOHC).
The 2014 Toyota Sienna has double overhead cam (DOHC).
The 2004 Toyota Sienna has double overhead cam (DOHC).
The 2011 Toyota Sienna has double overhead cam (DOHC).
The 2001 Toyota Sienna has double overhead cam (DOHC).
The 2012 Toyota Sienna has double overhead cam (DOHC).
The 2002 Toyota Sienna has double overhead cam (DOHC).