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Piston Pin to Bore Diameter

    NOTE: The piston and piston pin form a matched pair. Do not mix up the components.
  1. Measure the diameter of the piston pin bore.
    • Measure the diameter in two directions.
    • If the values are not to specification, install both a new piston and a new piston pin.
      Fig 1: Identifying Piston Pin Bore Diameter Dimension
      G03431592Courtesy of FORD MOTOR CO.