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.

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: Identifying Main Bearing Housing Grade, Bore Grade And Lot Label
Courtesy of NISSAN NORTH AMERICA, INC.

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

When Cylinder Block is Reused

Measure cylinder block bore diameter.

Determine the bore grade by comparing the measurement with the values under the "Cylinder bore diameter" of the piston selection table.

PISTON SELECTION CHART

Unit: mm (in)

Grade number (Mark)⁽¹⁾

Cylinder bore diameter

98.000-98.010 (3.8583-3.8587)

98.010-98.020 (3.8587-3.8590)

93.020-98.030 (3.8590-3.8594)

Piston diameter

97.980-97.990 (3.8575-3.8579)

97.990-98.000 (3.8579-3.8583)

98.000-98.010 (3.8583-3.8587)

⁽¹⁾	Always check with the Parts Department for the latest parts information.

NOTE:

The piston is available together with piston pin as an assembly.
The piston pin (piston pin bore) grade is provided only for the parts installed at the plant. For service parts, no grades can be selected (only 0 grade is available).