2009 Lincoln Navigator Owner's Manual - Page 362

Maintenance and Specifications 10. Reconnect the mass air flow sensor electrical connector to the outlet tube. Make sure the locking tab on the connector is in the "locked" position (connector shown from below for clarity). Note: Failure to use the correct air filter element may result in severe engine damage. The customer warranty may be void for any damage to the engine if the correct air filter element is not used. MOTORCRAFT PART NUMBERS Component Air filter element Battery Fuel filter Oil filter Spark plugs 1 5.4L 3V V8 engine FA-1883 BXT-65-650 or BXT-65-750 (if equipped) FG-10362 FL-820-S 1 For spark plug replacement, see your authorized dealer. Refer to scheduled maintenance information for the appropriate intervals for changing the spark plugs. 2 Long wheel base only Replace the spark plugs with ones that meet Ford material and design specifications for your vehicle, such as Motorcraft or equivalent replacement parts. The customer warranty may be void for any damage to the engine if such spark plugs are not used. 362 2009 Navigator (nav) Owners Guide, 2nd Printing USA (fus)