Ranger 4WD V6-245 4.0L VIN X SFI (1999)
1. Clean all the sealing surfaces.
2. Apply a bead of silicone rubber in two places.
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Use Silicone Gasket and Sealant F7AZ-19554-EA or equivalent meeting Ford specification WSE-M4G323-A4.
3. Install the valve cover gasket.
4. Install the RH valve cover.