Piston, Engine

Piston diameter-coded grade 1 88.990 - 89.010 mm (3.5035 - 3.5043 inch)
Piston diameter-coded grade 2 88.998 - 89.022 mm (3.5039 - 3.5048 inch)
Piston diameter-coded grade 3 89.010 - 89.030 mm (3.5043 - 3.5051 inch)
Piston-to-cylinder bore clearance 0.012 - 0.022 mm (0.0005 - 0.0009 inch)