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12-879 Billet Adjustable Regulator
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HOLLEYPART NUMBER: 510-12-879

12-879 Billet Adjustable Regulator

$20795
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EFI/Carbureted Adjustable Regulators
Billet Adjustable Regulator
  • EFI/Carbureted Applications
  • By-Pass Return Style
  • Adjustable 4-15 PSI or 16-65 PSI
  • 3/8 NPT Ports

    Features:

    • Adjustable from 4-15 psi or 16-65 psi for precise fuel pressure adjustments
    • Constructed of billet aluminum with a black anodized base and a clear anodized top for good looks
    • Used in systems with a return line back to the tank
    • (1) 3/8 NPT Inlet; (1) 3/8 NPT Outlet; and (1) 3/8 NPT Return Port
    • Includes fitting for manifold reference
    • Includes an 1/8 NPT gauge port
    • Boost Reference - 1:1
    • For use with gas, diesel and E85 applications

    Note: The regulator has a PSI range of 4-15 PSI. It also includes a second spring that can be installed for the 16-65 PSI range. Determine approximate fuel pressure your system will require. If your fuel pressure requirement is between 4 and 15 psi, the factory installed regulator spring is the proper spring. If your fuel pressure requirement is between 16 and 65 psi, insure the pressure adjustment set screw is backed out all the way, remove the 4 cover screws and cover, remove the factory installed spring, replace it with the high pressure spring, and reassemble the regulator.

    Emissions Note:

    This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

    CLICK THIS LINK FOR IMPORTANT CARB & EPA EMISSIONS INFORMATION ABOUT THIS PART

  • Part TypeFuel Pressure Regulator
    BrandHOLLEY
    Package Height3.3
    Package Width5.3
    Package Length5.4
    Weight1.4 PG
    Part CategoryPerformance Parts
    Regulator FinishBlack/Clear anodized
    Outlet Size3/8 NPT
    Inlet Size3/8 NPT
    Boost/Vacuum Rise Ratio1:01
    Regulator MaterialBillet aluminum
    Outlet QuantityOne
    QuantitySold individually
    Boost/Vacuum Reference PortYes
    RebuildableYes
    Mounting Bracket IncludedYes
    Gauge PortYes
    Return Fitting Size3/8NPT
    Regulator LocationInline
    Fittings IncludedNo
    Inlet QuantityOne
    Pressure Range (Psi)4-65
    Part FitmentUniversal
    Regulator StyleReturn
    Vendor Part Number12-879
    Package Qty1
    Package TypeEA
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