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2004 to 2008 F-150 and Mark-LT 4.2L, 4.6L and 5.4L equipped F-150s and Mark-LTs. |
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Ford would probably try to void your warranty for the drop in filter and exhaust if you had anything go wrong.
Also it is protection for PHP. From my limited experience with boosted gas vehicles, things go very wrong very quick when something isn't right.
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