Piston, Engine

Diameter (Measured at the piston pin bore centerline at 90° to the pin)
Coded Red 3.9991 - 3.9985 inch
Coded Blue 3.999 - 4.000 inch
0.003 inch Oversize 4.0008 - 4.0014 inch
Piston to Bore Clearance Selective Fit 0.0013 - 0.0030 inch
Piston Pin Bore Diameter 0.9123 - 0.9126 inch
Ring Groove Width Compression
Top 0.060 - 0.061 inch
Bottom 0.060 - 0.061 inch
Oil 0.587 - 0.1587 inch