Piston parameters include more than 15 sizes, the main ones are as follows:

• Diameter: nominal piston diameter;
• Height: piston height;
• Compression height;
• Groove height: first and second ring groove height;
• Oil control ring groove height;
• Cylinder gap: acceptable gap between cylinder and piston ring;
• Piston pin diameter;
• Ring height.

When piston is worn out, the gap between skirt and cylinder, piston upper groove erasing, skirt scoring, cracks and deformation of partitions between rings may occur.

Important: item parameters and sizes of different manufacturers can slightly differ.