How To Select Piston: Notes

WARNING: This page is about a different car, the 2005 Infiniti FX45. However, it is still accessible from the selected car via links, so may be relevant.

When New Cylinder Block is Used:

Check the cylinder bore grade ("1", "2" or "3") on the rear upper side between cylinder block banks, and select piston of the same grade.

NOTE: Piston is available with piston pin as a set for the service part. (Only "O" grade piston pin is available.)

Fig 1: Checking Cylinder Bore Grade On Rear Upper Side Between Cylinder Block Banks

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Identifying Piston Grade Number

Courtesy of NISSAN MOTOR CO., U.S.A.

When Cylinder Block is Reused:

Measure the cylinder bore inner diameter. Refer to "CYLINDER BORE INNER DIAMETER ".
Determine the bore grade by comparing the measurement with the values the "Cylinder bore inner diameter" of the "Piston Selection Table". Select piston of the same grade.