What's the difference between the 2008 CX-9 and 2010 CX-9 3.7L Engine?

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2009 Mazda CX-9 GT
Pretty much the same. Computers may be different based on the vehicles options. I believe the water pump was updated in 2012 or 2013 'ish.
 
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2007 MS3 GT
Same motor. Water pump has more fins on the blade but pretty much the same pump and same bearing failure issues with that pump.
 
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