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Product Summary

360, 390, Full-Length Header Tube Type, Ceramic Coated

    Key Specs

    Header Tube TypeFull-Length
    FinishCeramic Coated
    Flange StyleStandard
    Primary Tube Diameter1-3/4"
    Material TypeSteel

    Need To Know

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    Dougs Headers D603 Details

    Doug's 2/4 WD TRUCK HEADERS Long Tube Metallic Ceramic CoatedHeader development and design is complex and requires a substantial amount of time and resources to do the job right! Many manufacturers are unwilling to make the commitment and instead offer compromised headers at lower prices. Doug's will not compromise performance, quality or fit to compete with inferior designs at cheap prices. Every Doug's header is tuned with the proper tube size and length to efficiently remove all the exhaust from each cylinder, reducing pumping losses resulting in a dramatic increases in horsepower and torque. Doug's headers are carefully developed on the vehicles they are intended to fit and are re-checked numerous times during the design and manufacturing process.

    • 3/8" thick flanges... no warping
    • CNC mandrel bent tubes... accurate fit & better flow
    • Precision formed long transition collectors and long tube design... reduces backpressure and increases higher RPM horsepower
    • Heavy 16 gauge tubing... longer life
    • Tubes are pre-polished to remove scratches and the header isfinished with a Metallic Ceramic Thermal Barrier Coating polished to a high luster appearance offering corrosion and heat resistance up to 1400 degrees
    • Doug's Headers D603 1 3/4" 4-Tube Full Length Header Ford Truck FE 65-76 Metallic Ceramic Coating
    • Ceramic Coated
    • Collector: 2 1/2
    • Port Shape: SAP
    • Primary Tube: 1 3/4
    • Does not fit Camper Special models
    • emissions code: legal only for off-highway use (except in California or states that have adopted California emission standards)
    • with A/C
    • with Column Shift
    • with Floor Shifter
    • Doug's Headers D603 1 3/4" 4-Tube Full Length Header Ford Truck FE 65-76 Metallic Ceramic Coating
    • Ceramic Coated
    • Collector: 2 1/2
    • Port Shape: SAP
    • Primary Tube: 1 3/4
    • Does not fit Camper Special models
    • emissions code: legal only for off-highway use (except in California or states that have adopted California emission standards)
    • with A/C
    • with Column Shift
    • with Floor Shifter

    Application

    1975-1976 Ford F-150 5.9L/360 V8
    1975-1976 Ford F-150 6.4L/390 V8
    1975-1976 Ford F-250 5.9L/360 V8
    1975-1976 Ford F-250 6.4L/390 V8

    Charts

    CARB Warning

    For use on pre-1966 vehicles only

    Emissions warning: this part only legal for sale or use in California if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. ++any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering there are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

    Dougs Headers D603 Specifications

    KEY SPECS
    MFG. Part #D603
    BrandDougs Headers
    Header Tube TypeFull-Length
    FinishCeramic Coated
    Flange StyleStandard
    Primary Tube Diameter1-3/4"
    Material TypeSteel
    ColorSilver
    Weld-UpNo
    Collector Diameter2-1/2 Inch
    Hardware IncludedYes
    Gasket(s) IncludedYes
    GENERAL
    Speedway Motors Catalog Part #447-D603
    Sold in QuantityPair
    GTIN Code694342509965