Piston, Engine

Piston diameter-coded standard 100.380-100.400 mm (3.952-3.9528 inch)
Piston diameter-coded 0.5 100.880-100.900 mm (3.971-3.972 inch)
Piston diameter-coded 1.0 101.350-101.370 mm (3.990-3.991 inch)
Piston-to-cylinder bore clearance 0.030-0.050 mm (0.0012-0.002 inch)