BBK shorty tuned-length headers for 1999–2003 Ford F-150 5.4L (and 1997–2002 Ford Expedition 5.4L) use 1-5/8" CNC mandrel-bent tubing to improve exhaust flow, scavenging and combustion efficiency over stock manifolds. These direct bolt-on headers include new gaskets and hardware, are available in a titanium ceramic finish, and are pressure tested and precision welded to provide a leak-free installation while helping reduce corrosion.
BBK 99-03 Ford F Series Truck 5.4 Shorty Tuned Length Exhaust Headers - 1-5/8 Titanium Ceramic