Product Summary

4-Barrel Carburetor Barrels, Gasoline Fuel Type, Satin

    Rebates Available

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    Key Specs

    Carburetor Barrels4-Barrel
    Fuel TypeGasoline
    Choke TypeElectric
    CFM Range800-899 CFM
    CFM850 CFM
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    Need To Know

    Quick and Easy Returns

    Return Policy

    Quick Fuel Technology M-850 Details

    QFT brings its engineering expertise to the marine market. The M-Series feature billet-style metering blocks and throttle bodies for more precise performance and exceptional strength.

  • Exclusive Black Diamond coating for enhanced corrosion protection and appearance, coating provides a 6% reduction in fuel temperature
  • Electric choke - Fully adjustable, one wire hookup
  • J tubes to prevent spillage
  • PTFE-coated throttle shafts with PTFE bearing ribbons and stainless steel plates
  • Built-in sight glass windows for easy float adjustment
  • Changeable primary idle feed and power valve channel restrictions, plus changeable idle air and high speed bleeds
  • QuickLink™ secondary adjustment for fast and easy changing of opening rates
  • Available in eight different sizes from 350-1,050 cfm

  • Rebates

    Holley October Promo 10% Off Select Parts Sale

    Holley October Promo 10% Off Select Parts SaleHolleyOctoberPromo10%OffSelectPartsSale

    Holley's October Promo 10% Off Select Parts Sale, running from September 28, 2026, through November 1, 2026. For a limited time, customers can save up to 10% off on select Holley parts, making it the perfect opportunity to upgrade your ride with premium Holley branded parts including Holley, Brawler, Quick Fuel, Leg Wheels, Rev Wheels, Rocket Racing, Flowtech, Edge, Racequip, Apr and Dinan. Purchases must be made between September 28, 2026, through November 1, 2026. This limited-time offer applies to qualifying Holley branded parts purchased during the promotional period. Following the promotion, these parts will revert back to standard pricing.

    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.

    Quick Fuel Technology M-850 Specifications

    KEY SPECS
    MFG. Part #M-850
    BrandQuick Fuel Technology
    Carburetor Barrels4-Barrel
    Fuel TypeGasoline
    Choke TypeElectric
    CFM Range800-899 CFM
    CFM850 CFM
    Carburetor Flange Type4-Barrel Square Bore
    FinishSatin
    Material TypeAluminum
    ColorBlack
    Secondary TypeMechanical
    Fuel Inlet TypeDual
    Gasket(s) IncludedYes
    New or RemanufacturedNew
    Throttle Linkage TypeUniversal
    Supercharged ApplicationNo
    GENERAL
    BoosterDown-leg
    Bolt Hole Pattern5.160" x 5.625"
    GTIN Code849804000515
    Sold in QuantityEach

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