17040 is the universal Nissan fuel pump, nothing special.
Weird that they would say it was Nismo specific, as Nissan uses the exact same part on a long list of cars.
Checked via Courtesy Parts and it is shown in the 370Z diagram
172 Fuel Tank :: Fuel & Engine Control :: Genuine Nissan Parts :: 370Z Parts (Z34) 2009-2013 :: Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com
But then Courtesy Parts doesn't link to the actual part and you get these results with a search
Nissan Parts, NISMO and Nissan Accessories - Courtesyparts.com