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Product Summary

Universal Fit, Quick connect Fitting Style, Anodized

    Rebates Available

    See rebate details
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    Key Specs

    MFG. Part #751166ERL
    Fitting End A-6 AN Male
    Fitting End B3/8" Female EFI Quick Connect
    AngleStraight
    Material TypeAluminum
    See more specs

    Need To Know

    Quick and Easy Returns

    Return Policy

    Earls 751166ERL Details

    The Earl's Vapor Guard™ product line has been expanded to include O.E. fuel line quick connect fittings. These adapter fittings allow an easy way to re-use existing OEM fuel rails, fuel filters, and other components when doing an engines swap, or upgrading to Vapor Guard™ (or other AN Plumbing). Each fitting has a -6 AN Male Flare, and a metal retainer nut for a secure leak-free connection to the 5/16" or 3/8" SAE style fuel tube. Constructed from 6061 T6 aluminum w/ black anodized finish.

    Features:

    • Allows Easy Transition from AN plumbing to OEM Late Model Fuel Rails, Fuel Filters, and Other Fuel System Components
    • Material: 6061 Aluminum
    • Metal Retainer Nut is More Secure Than Plastic Clip
    • Black Anodized Finish
    • -6 AN Male Flare
    • Choose From Adapters that fit O.E. 5/16” or 3/8” Tube on Fuel Rails (and Other Components)
    • Economically Priced
    • Ideal for Use w/ Earls Vapor Guard™ Hose & Hose Ends
    • Slim Design for Extra Clearance

    Rebates

    Holley IRS Sale 2026

    Save 10% instantly on select products across the Holley family of performance brands during the annual Holley I.R.S.Tax Sale. Instant rebate period runs from February 17, 2026 through March 29, 2026.

    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.

    Earls 751166ERL Specifications

    KEY SPECS
    MFG. Part #751166ERL
    BrandEarls
    Fitting End A-6 AN Male
    Fitting End B3/8" Female EFI Quick Connect
    AngleStraight
    Material TypeAluminum
    GENERAL
    NotesFor use with late-model OEM fuel rails to connect AN fittings
    GTIN Code090127064771
    Fitting StyleQuick connect
    Gauge PortNo
    FinishAnodized
    ColorBlack
    Sold in QuantityEach
    SwivelNo
    ValvedNo
    AN Size-6 AN
    AdjustableNo
    ReusableYes
    Customer Impersonation Script