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Flowtech Shorty Headers - Ceramic Coated

97-02 Ford F-150/250/Expedition, 2WD & 4WD: 5.4L, Tube Size 1.5"; Silver Metallic Ceramic Coated; 50-State Legal header CARB EO #D-115-17.

PART# 91669-1FLT

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97-02 Ford F-150/250/Expedition, 2WD & 4WD: 5.4L, Tube Size 1.5"; Silver Metallic Ceramic Coated; 50-State Legal header C.A.R.B. EO #D-115-17.


  • This is a 50-State Legal header C.A.R.B. EO #D-115-17.
  • Sturdy 16-gauge tubing
  • Extra thick 3/8” flanges for a leak-free seal
  • Designed as a direct fit replacement for OEM exhaust manifolds
  • Will accommodate all emission control devices
  • Bolts directly to factory head pipe
  • Complete with premium gaskets and hardware


C.A.R.B. EO #D-115-17
CARB (California) CompliantYes
CARB EO#D-115-17
Collector Diameter2.50 inch
Emission Code1
Header FinishSilver Ceramic
Header StyleShorty
Primary Tube Dia.1-1/2 inch
Product TypeHeaders
Tube MaterialMild Steel
Part Number91669-1FLT

Service Parts



This part is legal for sale and use on Emissions Controlled Vehicles, in all 50 states, when used in accordance with the manufacturers application guide because it has a California Air Resources Board (CARB) Executive Order (EO) number.

The following vehicles are considered Emissions Controlled Vehicles:

  • 1966 and newer U.S. manufactured California Certified vehicles
  • 1968 and newer U.S. manufactured Federally Certified vehicles
  • 1968 and newer Foreign manufactured vehicle

C.A.R.B. EO #D-115-17

Tech Resources

Not compatible with Super Duty or Harley Davidson submodels. Breaking in an engine with ceramic coated headers WILL result in damage to the coating and will VOID all warranties. Ceramic coated headers require several heat cycles to fully cure before they will withstand extreme heat. Flowtech recommends using cast iron exhaust manifolds or old headers to break in new engines to avoid coating damage. Please call Flowtech tech services at 270-781-9741 for additional information regarding ceramic exhaust products. The use of header wraps can cause the header tubes to crack or rust due to excessive heat and moisture build-up. Flowtech does not recommend the use of header wraps as this will void the warranty.


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