Piston, Engine

Piston diameter-coded red 96.795-96.782 mm (3.81082-3.81031 inch)
Piston diameter-coded blue 96.808-96.795 mm (3.81133-3.81082 inch)
Piston diameter-coded yellow 96.821-96.808 mm (3.81184-3.81133 inch)
Piston-to-cylinder bore clearance (uncoated clearance) 0.018-0.044 mm (0.007-0.0017 inch)
Piston ring end gap-compression (top) (in gauge) 0.17-0.33 mm (0.0067-0.0130 inch)
Piston ring end gap-compression (bottom) (in gauge) 0.3-0.55 mm (0.0118-0.0217 inch)
Piston ring end gap-oil ring (steel rail) (in gauge) 0.15-0.65 mm (0.0059-0.0256 inch)
Piston ring groove width-compression (top) 1.54-1.52 mm (0.0606-0.0598 inch)
Piston ring groove width-compression (bottom) 1.54-1.52 mm (0.0606-0.0598 inch)
Piston ring groove width-oil 3.05-3.03 mm (0.1200-0.1193 inch)
Piston ring width-compression (top) 1.460-1.490 mm (0.0575-0.0587 inch)
Piston ring width- compression (bottom) 1.460-1.490mm (0.0575-0.0587 inch)
Piston ring width-oil ring side seal-snug fit
Piston ring-to-groove clearance-1st ring 0.030-0.080 mm (0.0012-0.0032 inch)
Piston ring-to-groove clearance-2nd ring 0.030-0.080 mm (0.0012-0.0032 inch)

Note: When installing new pistons measure the cylinder bore. Install the service piston matched to the piston bore diameter above.