Product Summary

Universal Fit, Block Hugger Header Tube Type, Painted

    Key Specs

    Header Tube TypeBlock Hugger
    Flange StyleStandard
    Primary Tube Diameter1-3/4"
    Material TypeSteel

    Need To Know

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    Flowtech Exhaust 11701FLT Details

    Flowtech Headers are the perfect combination of quality and value. This tight fit block hugger header fits all popular hot rods with the popular Big Block Chevy motor.

    • Tight fit block hugger design for popular hot rod and street rods powered by the popular Chevy LS motors
    • Mandrel-bent tubes provide consistent tubing diameters for smooth flow and increased exhaust velocity
    • Heavy duty 16-gauge tubing for increased strength and durability
    • Smooth transition, 1-3/4 diameter primary tubes are used for increased exhaust flow increasing performance and improving throttle response
    • TIG-welded 2-1/2 collector for maximum strength
    • Machined 3/8 header flange for a leak-free seal and maximum strength
    • Premium aluminum header gaskets included
    • Adapter tubes are supplied for easy exhaust connection
    • High heat resistant black paint coating for a classic finish


    CARB Warning

    For race/ off road use only

    Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway. 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.

    Flowtech Exhaust 11701FLT Specifications

    MFG. Part #11701FLT
    BrandFlowtech Exhaust
    Header Tube TypeBlock Hugger
    Flange StyleStandard
    Primary Tube Diameter1-3/4"
    Material TypeSteel
    Collector Diameter2-1/2 Inch
    Hardware IncludedYes
    Gasket(s) IncludedYes
    Flange Thickness0.375"
    Sold in QuantityPair
    Emission Code3
    GTIN Code090127690536