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Piston Diameter

NOTE: Refer to ENGINE MECHANICAL - 3.5L or ENGINE MECHANICAL - 3.5L-GTDI for the specification.
  1. Measure the piston diameter 90 degrees from the piston pin and 42 mm (1.65 in) down from the top of the piston at the point indicated.
    Fig 1: Measuring Piston Diameter Using Micrometer
    G06073208Courtesy of FORD MOTOR CO.