How To Select Piston

WARNING: This page is about a different car, the 2012 Nissan Pathfinder. 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 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.)

Fig 1: Identifying Bearing Housing, Cylinder Bore And Management Grade

Courtesy of NISSAN NORTH AMERICA, INC.

When Cylinder Block is Reused

Measure the cylinder bore inner diameter. Refer to "INSPECTION AFTER DISASSEMBLY ".
Determine the bore grade by comparing the measurement with the values under the cylinder bore inner diameter of the "Piston Selection Table".

Fig 2: Identifying, Front Mark, Piston And Piston Pin Grade Number
Courtesy of NISSAN NORTH AMERICA, INC.

Select piston of the same grade.

PISTON SELECTION CHART

Unit: mm (in)
Grade	1	2 (or no mark)	3
Cylinder bore inner diameter	95.500 - 95.510 (3.7598 - 3.7602)	95.510 - 95.520 (3.7602 - 3.7606)	95.520 - 95.530 (3.7606 - 3.7610)
Piston skirt diameter	95.480 - 95.490 (3.7590 - 3.7594)	95.490 - 95.500 (3.7594 - 3.7598)	95.500 - 95.510 (3.7598 - 3.7602)

NOTE:

Piston is available together with piston pin as assembly.
Piston pin (piston pin hole) grade is provided only for the parts installed at the plant. For service parts, no piston pin grades can be selected. (Only "0" grade is available.)
No second grade mark is available on piston.