hi ...
i know this is call cowl ..mine become havey rusted..want to replace it .. but i dotn know for sure or exactly what is the oem part number.. because there is many parts under cowl. so here is little driscription of the parts number i want .... This is a metal peice that gose under the plastic.

Picture here -- http://img20.imageshack.us/img20/7230/gedc0278b.jpg

 

That's a good one man.......hope someone chimes in on this one.

 

//www.courtesyparts.com/maxima-parts-a34-2004-2008/genuine-nissan-parts/bodyfrontroof-floor/660-cowl-top-fitting/-c-2668_2669_2778_2786.html