PART #3530 FEATURES: Approx. 20 Horsepower And Torque Increase Over Stock Increased Exhaust Flow For Enhanced Power and Sound 1-5/8" Primaries for Maximum Flow 16 Gauge CNC Mandrel Bent Steel Tubing and 3/8" Thick Header Flanges All Required Gaskets and Hardware Included Fit ALL 1997-2003 4.6L & 5.4L F150 Applications Titanium Ceramic Finish VEHICLE FITMENT: 1997-2003 Ford F150 4.6L Or 5.4L V8 Trucks Does NOT fit Lightning or Harley Davidson 5.4 SC Trucks Fits both 2WD and 4WD O2 Harness Extensions are Not Required Improve Your Truck's Power and Sound Improve the power and sound from your 1997-2003 F150 4.6L or 5.4L V8 with these titanium ceramic BBK Performance full length long tube exhaust headers. BBK Performance exhaust headers will increase your exhaust flow giving you additional horsepower and torque to the rear wheels. They will also give your modular V8 powered F-150 a throaty exhaust note. Designed to Perform ALL BBK F150 exhaust headers are manufactured with 1-5/8" CNC mandrel bent primary tubing along with 3/8" thick laser cut header flanges to prevent heat distortion. The large diameter primary tube design creates unrestricted airflow for major horsepower gains. These headers are pressure tested at the factory to ensure leak free performance. ALL Kits includes new gaskets and hardware. Emissions Information This part is NOT C.A.R.B Approved and cannot be installed for use on any emission controlled vehicle in California. It cannot be sold or shipped to any California resident or addressee.