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Holley 12-879

Billet Adjustable Regulator

Holley 12-879

510-12-879

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Holley 12-879 Billet Adjustable Regulator $128.95
Billet Adjustable Regulator
  • EFI/Carbureted Applications
  • By-Pass Return Style
  • Adjustable 4-15 PSI or 16-65 PSI
  • 3/8" NPT Ports

  • Holley 12-879 Details

    EFI/Carbureted Adjustable Regulators

    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.

  • Specifications:

    Pressure
    4-65 PSI
    Manufacturer's Part Number:
    12-879

    Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products. They are precision machined from 6061-T6 billet aluminum for strength and durability. They feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance. Holley Billet Fuel Pressure Regulators are available in a variety of configurations.

    HP & Dominator Series
  • Demand and return style regulators available.
  • CNC machined from 6061-T6 billet aluminum for strength.
  • Black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks.
  • All regulators feature a 1/8" NPT gauge port.
  • Carbureted and EFI versions available.
  • All regulators include a mounting bracket for easy installation.

    Ultra HP & VR Series
  • Can support 3,000+ HP engine applications that require high flow fuel volumes.
  • EFI regulators are adjustable from 40-100 PSI base pressure.
  • Carbureted regulators are adjustable from 4 to 9 PSI base pressure.
  • Compatible with gasoline, methanol, and E85* (*requires draining and flushing after each race).
  • 1/8" NPT gauge port.
  • Designed for use with the Holley Ultra HP and Ultra Dominator Brushless in-line fuel pumps.
  • Can be referenced on a 1:1 ratio - includes a barb fitting and a -4 AN fitting for reference connection.
  • 2 port regulators feature a 10 AN O-ring inlet/outlet and return.
  • 4 port regulators feature a 10 AN O-ring inlet and return with (4) 8 AN O-ring outlets.

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