Coming Soon

Ford F-150 11th Generation (2004-2008)

2004–2008 · P221 · truck

The P221-platform F-150 brought a fully boxed frame, three-bar grille, and a new 3-valve cylinder head for the 5.4L Triton V8. Engine lineup: 4.2L Essex V6 (regular cab base), 4.6L 2V Triton V8, and the 5.4L 3V Triton V8 (the volume engine). Available as Regular Cab, SuperCab, and SuperCrew. The Harley-Davidson and King Ranch trims defined the upscale-truck era.

Watch out: The 5.4L 3V Triton's two-piece spark plug breakage is the defining issue - Motorcraft SP-507 (then SP-515) plugs were welded at the electrode, creating a natural break point that carbon-locked into the cylinder head. Removal at high mileage commonly snaps the plug off in the head, requiring a specialty extractor (Lisle 65600 or similar). Affects 2004-2008 builds with build date before 10/9/2007. Cam phaser failure on the same engine (the cold-start rattle) is the secondary headache. Best preventive: change plugs by 30k miles with anti-seize, not Ford's 100k interval.