Lower plastic intake manifold may come apart on Lincoln Navigator

The lower intake manifold is plastic and may come apart completely.

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Average mileage: 257,500 (223,000–292,000)
Engine affected: 5.4L V8
6 model years affected: 1998, 1999, 2000, 2001, more2002, 2003
9 people reported this problem
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2003 Lincoln Navigator 292,000 mi,
Blown intake gasket. Repaired with new gasket.