If it is 4 wheel drive then there is a solid axle in the rear and a trans-axle in the front. the trans-axel has two CV shafts on either side connecting to the front tires. If it is 2 wheel drive then there is just a solid rear axle. and your front tires mount to spindles.
The 2012 Toyota 4Runner has 24 valves.
The 2010 Toyota 4Runner has 16 valves.
The 2014 Toyota 4Runner has 24 valves.
The 2013 Toyota 4Runner has 24 valves.
The 2001 Toyota 4Runner has 24 valves.
The 2011 Toyota 4Runner has 24 valves.
The 2009 Toyota 4Runner has 24 valves.
The 2002 Toyota 4Runner has 24 valves.
The 2007 Toyota 4Runner has 24 valves.
The 2004 Toyota 4Runner has 24 valves.
The 2008 Toyota 4Runner has 24 valves.
The 2005 Toyota 4Runner has 24 valves.