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These Stainless Works headers for 2004–2008 Ford F-150 5.4L feature 1-3/4in mandrel-bent primaries and high-flow catalytic converters with 2-1/2in catted lead pipes and clamps. Designed with a Y-pipe to connect to the factory connection point, they fit SuperCrew (5.5' or 6.5' bed) and SuperCab (6.5' bed) 2WD and 4WD models for a tidy direct replacement.
Stainless Works 2004-08 F150 5.4L Headers 1-3/4in Primaries 2-1/2in High-Flow Cats Y-Pipe
