[smj999smj]

The only thing they changed on the VQ40DE was a part on the intake... I can't remember if it was on the upper plenum or lower manifold, but it was sometime around 2008/2009. As far as the long block assembly, 2005-and-new Frontier/Xterra and 2005-2012 Pathfinder are all the same and will work.

 

[smj999smj]

ATK has a 2.5L for 2005 to 2008. Will this motor work in my 2009 frontier? The JEGS guy did not know. Thanks

When I looked up a QR25DE long block for a 2009 Frontier @ NissanPartsDeal.com, it shows P/N 10102-EA0K1, fitting production date 10/2004-08/2011. So, as long as the engine is for a truck and not a car (like an Altima, which would be different), the engine "should" fit.