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The 2007 Mazda CX-9 has 24 valves.
The 2008 Mazda CX-9 has 24 valves.
The 2013 Mazda CX-9 has a V6 engine.
The 2011 Mazda CX-9 has 24 valves.
The 2010 Mazda CX-9 has 24 valves.