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Product Summary

396, 402, 427, 454, 502, Tri-Y Header Tube Type, Steel

    Key Specs

    Header Tube TypeTri-Y
    FinishHi-Temp Black
    Flange StyleStandard
    Primary Tube Diameter1-3/4"
    Material TypeSteel

    Need To Know

    This Product Will Ship Free

    Shipping Policies & FAQs

    Quick and Easy Returns

    Return Policy

    Dougs Headers D303Y-B Details

    • 3/8" Thick machined flanges...no warping
    • CNC mandrel bent tubes... accurate fit & better flow
    • Tri-Y headers yield maximum power from off idle to 4500 RPM making them well suited for applications demanding maximum mid-range torque with maximum fuel economy
    • Heavy 16 gauge tubing...longer life
    • Tubes are pre-polished to remove scratches and the header is finished with a Hi-Temp Black Coating
    • Doug's Headers D303Y-B 1 3/4" Tri-Y Header Chevrolet Truck Big Block Chevrolet 68-87 Hi-Temp Black Coating
    • Fits Automatic Transmissions
    • Doug's Headers D303Y-B 1 3/4" Tri-Y Header Chevrolet Truck Big Block Chevrolet 68-87 Hi-Temp Black Coating
    • Fits Automatic Transmissions

    Guides & Documents

    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 D303Y-B Specifications

    KEY SPECS
    MFG. Part #D303Y-B
    BrandDougs Headers
    Header Tube TypeTri-Y
    FinishHi-Temp Black
    Flange StyleStandard
    Primary Tube Diameter1-3/4"
    Material TypeSteel
    ColorBlack
    Weld-UpNo
    Collector Diameter2-1/2 Inch
    Hardware IncludedYes
    Gasket(s) IncludedYes
    GENERAL
    Speedway Motors Catalog Part #447-D303YB
    Sold in QuantityPair
    GTIN Code694342543006