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Lincoln Navigator 4th Generation (U554)

20182024 · U554 · suv

Fourth-gen Navigator (U554) on the T3 platform shared with the Expedition U553 and F-150 14th-gen. First aluminum-body Navigator. Single engine: 3.5L EcoBoost twin-turbo V6 (450hp/510 lb-ft). 10R80 10-speed automatic. RWD or 4WD. Navigator L extended-wheelbase variant continues. Refresh 2022 added BlueCruise, ActiveGlide, and a 13.2-inch SYNC 4 center screen.

Watch out: Same 3.5 EcoBoost cam-phaser failure pattern (2018-2020 builds) as the F-150 / Expedition siblings — Ford CSP 21N03 covered some VINs but $3,000+ out-of-pocket past warranty is common. 10R80 10-speed launch-era harsh-shift TSBs addressed by reflashes. Air suspension is now standard and well-documented to leak at the front bags around 80-100k, $1,500-2,000 per corner if dealer-repaired.

Full clubhouse — owner Garage Lineage, common problems, year-by-year notes, and product picks — is on the build list.

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