Improve the power and performance on your Ford Lighting truck with our top of the line Stainless Works headers. All tubes are CNC mandrel bent for optimal flow. Made from 304 stainless steel for maximum corrosion resistance. These Mandrel bent TIG welded headers fit like a glove on your 1999-04 Ford SVT Lightning with a 5.4L motor. Starting with 3/8″ thick flanges welded to 1-3/4″ primaries, flow into 3″ slip-fit collectors, integrated merge spike and off-road leads. This system is designed to connect to Stainless Works exhaust systems. Install a true dual inlet/outlet custom designed muffler for the full Stainless Works experience. As always, these headers come with a mill finish, and TIG welded for strength and durability. These kits come with a lifetime warranty on material and craftsmanship as always proudly made in the USA. Upgrade your sound today with Stainless Works!