How To Select Piston: Notes

WARNING: This page is about a different car, the 2005 Infiniti QX56. However, it is still accessible from the selected car via links, so may be relevant.

Piston Selective Fitting When New Cylinder Block is Used:

Check the cylinder bore grade on the bottom face of the cylinder block, and select the piston of the same grade.

Fig 1: Checking Cylinder Bore Grade On Bottom Face Of Cylinder Block, And Selecting Piston Of The Same Grade
Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Identifying Front Mark, Piston Grade And Piston Pin Hole Grade Color (Paint)
Courtesy of NISSAN MOTOR CO., U.S.A.