Piston

1999 Ford Explorer 2WD V8-302 5.0L VIN P SFISECTION Piston
Diameter - coded red 3.9987 - 3.9993
Diameter - coded blue 3.999 - 4.0005
Diameter - coded yellow 4.0011 - 4.0017
Top ring groove width 0.060 - 0.061
Bottom ring groove width 0.060 - 0.061
Oil ring groove width 0.1587 - 0.1597
Bore clearance selective fit 0.0012 - 0.0020
Piston Pin Bore Or Bushing I.D. 0.909 - 0.911
RENDER: 1.0x

NO RELATED

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • You smell fuel, burning insulation, or see smoke.
  • Brakes feel soft, pull hard to one side, or make grinding noises.
  • The engine overheats, stalls repeatedly, or misfires under load.
  • You are missing required tools, torque specs, or safe lifting equipment.
  • You are not confident in the next step or safety outcome.