F 550 2WD Super Duty V8-6.0L DSL Turbo VIN P (2006)
5. Remove the 2 stud bolts and thermostat assembly.
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Remove and discard the O-ring seal.
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To install, tighten to 27 Nm (20 ft. lbs.).
6. To install, reverse the removal procedure.
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Install a new O-ring seal on the thermostat assembly.