When New Cylinder Block is Used
WARNING: This page is about a different car, the 2007 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.
Check the cylinder bore grade ("1", "2", or "3") on rear side of cylinder block, and select piston of the same grade.
NOTE:
Piston is available with piston pin as a set for the service part. (Only "0" grade piston pin is available.)