F 350 4WD Super Duty V8-6.0L DSL Turbo VIN P (2004)
6. Disconnect the exhaust backpressure sensor electrical connector and retaining clip.
7. Disconnect the exhaust backpressure tube at the exhaust manifold.
8. Remove the retaining nuts and exhaust backpressure assembly.
9. Remove the stud bolts and thermostat assembly.
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Remove and discard the O-ring.
10. To install, reverse the removal procedure.
^
Install a new O-ring on the thermostat assembly.
