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Holley Fuel Pressure Regulators

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Holley Fuel Pressure Regulators

Holley Adjustable Billet By-Pass Fuel Regulator - Adjustable - 4-65 psi. - 3/8 in. NPT Outlet/Inlet - Boost Reference 1 To 1 - EFI Bypass Style - Black Anodized Base/Clear Anodized Top - 12-879

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    Features:
    • Part #: 12-879
    • Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from 6061-T6 billet aluminum for strength and durability. These regulators are adjustable from 4-65 psi and will handle both carbureted and EFI applications. They are offered with two port sizes, 3/8" NPT or 6AN to adapt to your new or existing fuel lines. So, if you are currently running a carbureted system but plan to upgrade to EFI in the future, these regulators will have you covered either way.
    • Color: Black
      Fuel System Type: EFI/Carb
      Fuel Type: Gasoline / Diesel / E85
      Inlet Size: 0.375 in. NPT
      Material: Aluminum
      Outlet Size: 0.375 in. NPT
      Pressure: 4-65 PSI
      Return Size: 0.375 in. NPT
      Style: Bypass
    • Adjustable From 4-65 Psi For Precise Fuel Pressure Adjustments
      Billet Aluminum w/Black Anodized Base/Clear Top For Good Looks
      Used In Systems With A Return Line Back To The Tank
      Includes Fitting For Manifold Reference
      Includes An 1/8 Npt Gauge

    Holley Adjustable Billet By-Pass Fuel Regulator - Adjustable - 4-65 psi. -6AN Outlet/Inlet - Boost Reference 1 To 1 - EFI Bypass Style - Black Anodized Base/Clear Anodized Top - 12-880

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      Free Shipping - Ships by 12/06/2022
      Features:
      • Part #: 12-880
      • Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from 6061-T6 billet aluminum for strength and durability. These regulators are adjustable from 4-65 psi and will handle both carbureted and EFI applications. They are offered with two port sizes, 3/8" NPT or 6AN to adapt to your new or existing fuel lines. So, if you are currently running a carbureted system but plan to upgrade to EFI in the future, these regulators will have you covered either way.
      • Color: Black
        Fuel System Type: EFI/Carb
        Fuel Type: Gasoline / Diesel / E85
        Inlet Size: 6AN O-Ring
        Material: Aluminum
        Outlet Size: 6AN O-Ring
        Pressure: 4-65 PSI
        Return Size: 6AN O-Ring
        Style: Bypass
      • Adjustable From 4-65 Psi For Precise Fuel Pressure Adjustments
        Billet Aluminum w/Black Anodized Base/Clear Top For Good Looks
        Used In Systems With A Return Line Back To The Tank
        Includes Fitting For Manifold Reference
        Includes An 1/8 Npt Gauge

      Holley Dominator Billet Fuel Pressure Regulator - Carbureted - 4.5-9 psi - 10AN O-Ring Inlet/Outlet - 8AN O-Ring Return - Gas/Diesel/E85 - Black Anodized - 12-847

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        Features:
        • Part #: 12-847
        • Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. 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 and good looks. Holley Billet Fuel Pressure Regulators are available in a variety of configurations.
        • Color: Black Anodized
          Fuel System Type: Carbureted
          Fuel Type: Gasoline / Diesel / E85
          Material: Aluminum
          Pressure: 4.5-9 PSI
          Return Size: 8AN O-Ring
          Style: Bypass
        • Holley® Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley®. 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 and good looks. The Holley 12-847 fuel pressure regulator features (1)-10 AN O-ring inlet; (1)-10 AN O-ring outlet; (1)-8 AN O-ring return.
        • Adjustable From 4.5-9 PSI For Precise Fuel Pressure Adjustment
          Constructed Of Billet Aluminum For Good Looks
          Used In Systems With A Return Line Back To Tank
          Use With Electric Pumps Only
          1/8in. Npt Gauge Port
          Mounting Bracket Included

        Holley Dominator EFI Billet Fuel Pressure Regulator - EFI - 15-65 PSI - 10AN O-Ring Inlet/Outlet - 8AN O-Ring Return - Gas/Diesel/E85 - Black Anodized - 12-848

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          Features:
          • Part #: 12-848
          • Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. 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 and good looks. Holley Billet Fuel Pressure Regulators are available in a variety of configurations.
          • Color: Black Anodized
            Fuel System Type: EFI
            Fuel Type: Gasoline / Diesel / E85
            Material: Aluminum
            Pressure: 15-65 PSI
            Return Size: 8AN O-Ring
            Style: Bypass
          • Holley® Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley®. 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 and good looks. The Holley 12-848 fuel pressure regulator features(1)-10 AN O-ring inlet; (1)-10 AN O-ring outlet; (1)-8 AN O-ring return.
          • Adjustable From 15-65 PSI For Precise Fuel Pressure Adjustment
            Constructed Of Billet Aluminum For Good Looks
            Used In Systems With A Return Line Back To Tank
            Use With Electric Pumps Only
            1/8in. Npt Gauge Port
            Mounting Bracket Included

          Holley Fuel Injection Pressure Regulator - Fuel Pressure Regulators - 12-851

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            Features:
            • Part #: 12-851
            • Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR(R) Sprint(R) Cup team and nearly every NHRA(R) Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GMs LS engine. Holleys products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Headers, NOS Nitrous, Weiand, Earls Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.
            • Color: Black Anodized
              Fuel System Type: EFI
              Fuel Type: Gasoline / Ethanol / Methanol / E85
              Material: Aluminum
              Pressure: 40-100 PSI
              Return Size: 10AN O-Ring
            • EFI Regulators Are Adjustable From 40-100 PSI Base Pressure
              Carbureted Regulators Are Adjust From 4-9 PSI Base Pressure
              Compatible With Gasoline Methanol and E85
              1/8 in. NPT Gauge Port
              2 Port Regulators Feature A 10AN O-Ring Inlet/Outlet/Retur

            Holley Fuel Injection Pressure Regulator - Fuel Pressure Regulators - 12-864

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              Free Shipping - Ships by 12/06/2022
              Features:
              • Part #: 12-864
              • Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR(R) Sprint(R) Cup team and nearly every NHRA(R) Pro–Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GMs LS engine. Holleys products also include performance fuel pumps, intake manifolds & engine dress–up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Headers, NOS Nitrous, Weiand, Earls Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.
              • Color: Black Anodized
                Fuel System Type: EFI
                Fuel Type: Gasoline / Ethanol / Methanol / E85
                Material: Aluminum
                Pressure: 40-100 PSI
                Return Size: 8AN O-Ring
              • EFI Regulators Are Adjustable From 40-100 PSI Base Pressure
                Carbureted Regulators Are Adjust From 4-9 PSI Base Pressure
                Compatible With Gasoline Methanol and E85
                1/8 in. NPT Gauge Port
                2 Port Regulators Feature A 10AN O-Ring Inlet/Outlet/Retur

              Holley Fuel Injection Pressure Regulator - Fuel Pressure Regulators - 12-889

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                Features:
                • Part #: 12-889
                • When converting your fuel system to a return style EFI setup, the biggest challenge can be plumbing the fuel lines. Holley continues to be the leader in fuel system development to make your life easier! The new diecast aluminum Holley EFI Filter Regulator assembly simplifies your installation by combining the fuel filter and regulator in one assembly that can be mounted in the rear of the vehicle. Thus making your return line much shorter. The die cast aluminum assembly contains a 175 GPH 10 Micron filter and a regulator preset at 59.5 psi. The filter regulator comes in 3/8" NPT or 8 AN port sizes to match most EFI fuel systems.
                • Free Flow GPH: 175
                  Fuel System Type: EFI
                  Micron Rating: 10
                  Pressure: 59.5 PSI
                  Thread Size: 8AN
                • Designed To Help Minimize The Fuel Line Plumbing Needed
                  Die Cast Aluminum Assembly
                  175 GPH 10 Micro Filter
                  Regulator Preset at 59.5 PSI

                Holley Fuel Pressure Regulator - Carbureted - Gas - 1/2 in NPT Inlet/Outlet - 4.5-9.0 PSI Range - Non-Return Style - Two Port - Shiny Finish - 12-704

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                  Features:
                  • Part #: 12-704
                  • Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator.
                  • Color: Shiny
                    Fuel System Type: Gasoline
                    Inlet Size: 0.500 in. NPT
                    Material: Aluminum
                    Outlet Size: 0.500 in. NPT
                    Pressure: 4.5-9 PSI
                    Style: Non-Return
                  • Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator. The Holley 12-704 fuel pressure regulator features 1/2in. NPT in/out ports.
                  • Adjustable Fuel Regulation From 4-1/2 To 9 PSI
                    One 1/2in. Npt Inlet and Two 1/2in. Npt Outlet Ports
                    .437 in. 7/16 in. Restriction
                    Includes Mounting Hardware and an Style Fittings
                    Alcohol Compatible

                  Holley Fuel Pressure Regulator - Carbureted - Gas - 3/8 in. NPT Inlet/Outlet - 4.5-9.0 PSI Range - 3/8 in. NPT Return - Bypass Style - Two Port - Shiny Finish - 12-803BP

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                    Free Shipping - Ships by 12/06/2022
                    Features:
                    • Part #: 12-803BP
                    • Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator.
                    • Color: Shiny
                      Fuel System Type: Gasoline
                      Inlet Size: 0.375 in. NPT
                      Material: Aluminum
                      Outlet Size: 0.375 in. NPT
                      Pressure: 4.5-9 PSI
                      Return Size: 0.375 in. NPT
                      Style: Bypass
                    • Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator. The Holley 12-803BP fuel pressure regulator features 3/8in. NPT in/out ports and a 3/8in. NPT return port.
                    • Adjustable Fuel Regulation From 4-1/2 To 9 PSI
                      Preset To 7 PSI
                      3/8in. Npt Ports 1 in. 1 Out 1 Bypass Or Return
                      Used In Systems With A Return Line Back To The Fuel Tank
                      Quieter Fuel Pump Operation
                      Designed Only For Carburetor Use
                      Chrome F

                    Holley Fuel Pressure Regulator - Fuel Pressure Regulators - 12-852

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                      Features:
                      • Part #: 12-852
                      • The Holley VR Series billet fuel pressure regulators are part of the VR1 and VR2 Series brushless fuel pump systems product line. These regulators can support 3000+ horsepower engines that require high volumes of fuel flow. Both EFI and carbureted versions can be referenced on a 1:1 ratio. They are precision machined from 6061-T6 billet aluminum for strength and durability and feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. Offered in 2 port and 4 port versions for carbureted or EFI pressures, Holley has the regulator to cover your needs!
                      • The Holley Ultra HP and Ultra Dominator billet fuel pressure regulators are part of the Ultra HP and Ultra Dominator brushless fuel systems product line. These regulators can support 3000+horsepower engines that require high volumes of fuel flow. Both EFI and carbureted versions can be referenced on a 1:1 ratio. They are precision machined from 6061-T6 billet aluminum for strength and durability and feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. Offered in 2 port and 4 port versions for carbureted or EFI pressures; Holley has the regulator to cover your needs!
                      • 1/8 in. NPT Gauge Port

                      Holley Fuel Pressure Regulator - Fuel Pressure Regulators - 12-865

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                        Free Shipping - Ships by 12/06/2022
                        Features:
                        • Part #: 12-865
                        • The Holley VR Series billet fuel pressure regulators are part of the VR1 and VR2 Series brushless fuel systems product line. These regulators can support 3000+ horsepower engines that require high volumes of fuel flow. Both EFI and carbureted versions can be referenced on a 1:1 ratio. They are precision machined from 6061-T6 billet aluminum for strength and durability and feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. Offered in 2 port and 4 port versions for carbureted or EFI pressures, Holley has the regulator to cover your needs!
                        • The Holley Ultra HP and Ultra Dominator billet fuel pressure regulators are part of the Ultra HP and Ultra Dominator brushless fuel systems product line. These regulators can support 3000+horsepower engines that require high volumes of fuel flow. Both EFI and carbureted versions can be referenced on a 1:1 ratio. They are precision machined from 6061-T6 billet aluminum for strength and durability and feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. Offered in 2 port and 4 port versions for carbureted or EFI pressures; Holley has the regulator to cover your needs!
                        • 1/8 in. NPT Gauge Port

                        Holley Fuel Pressure Regulator - Fuel Pressure Regulators - 12-883

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                          Features:
                          • Part #: 12-883
                          • Holley's new double adjustable fuel pressure regulators are designed for belt or cable driven pumps where fuel flow changes with engine rpm. These regulators are compatible with E85 and alcohol applications. Made from billet aluminum, these regulators are offered in both 2-Port and 4-Port models to complete your fuel system requirements.
                          • Individual Adjustment Settings/Idle And Wide Open Throttle
                            Fuel Pressure Adjust At Idle Can Help Prevent Flooding At Low RPM
                            WOT Settings Help Prevent Fuel Starvation At Top End Of RPM Range

                          Holley Fuel Pressure Regulator - Fuel Pressure Regulators - 12-884

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                            Free Shipping - Ships by 12/06/2022
                            Features:
                            • Part #: 12-884
                            • Holley's new double adjustable fuel pressure regulators are designed for belt or cable driven pumps where fuel flow changes with engine rpm. These regulators are compatible with E85 and alcohol applications. Made from billet aluminum, these regulators are offered in both 2-Port and 4-Port models to complete your fuel system requirements.
                            • Individual Adjustment Settings/Idle And Wide Open Throttle
                              Fuel Pressure Adjust At Idle Can Help Prevent Flooding At Low RPM
                              WOT Settings Help Prevent Fuel Starvation At Top End Of RPM Range

                            Holley Fuel Pressure Regulator - Fuel Pressure Regulators - 12-885

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                            $369.00
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                              Free Shipping - Ships by 12/06/2022
                              Features:
                              • Part #: 12-885
                              • Holley's new double adjustable fuel pressure regulators are designed for belt or cable driven pumps where fuel flow changes with engine rpm. These regulators are compatible with E85 and alcohol applications. Made from billet aluminum, these regulators are offered in both 2-Port and 4-Port models to complete your fuel system requirements.
                              • Individual Adjustment Settings/Idle And Wide Open Throttle
                                Fuel Pressure Adjust At Idle Can Help Prevent Flooding At Low RPM
                                WOT Settings Help Prevent Fuel Starvation At Top End Of RPM Range

                              Holley Fuel Pressure Regulator - Gasoline - Carbureted - 8 AN O-Ring Inlet/6 AN O-Ring Outlet - 4.5-9 PSI Range - Non-Return Style - Four Port - Hard Coat Anodized - 12-707

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                                Features:
                                • Part #: 12-707
                                • Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator.
                                • Color: Hard Coat Anodized
                                  Fuel System Type: Gasoline
                                  Inlet Size: 8AN O-Ring
                                  Material: Aluminum
                                  Outlet Size: 6AN O-Ring
                                  Pressure: 4.5-9 PSI
                                  Style: Non-Return
                                • Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator. The Holley 12-707 fuel pressure regulator features 1-8 inlet/4-6 outlet ports.
                                • Adjustable Fuel Regulation From 4-1/2 To 9 PSI
                                  One 8 Inlet Port/Four 6 Outlet Ports
                                  .437 in. 7/16 in. Restriction
                                  Hard Coat Anodized For Corrosion Resistance
                                  Three Fuel Pressure Gauge Mounting Options
                                  Includes Mounting Hardware and an Fitti

                                Holley Fuel Pressure Regulator - Race/EFI Apps - Gas - Boost Compensating - 8 AN O-Ring Inlet/Outlet - 6 AN O-Ring Return - Adjustable 15-65 PSI - Bypass Style - Two Port - Black Anodized - 512-504-5

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                                  Features:
                                  • Part #: 512-504-5
                                  • Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. 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 and good looks. Holley Billet Fuel Pressure Regulators are available in a variety of configurations.
                                  • Color: Hard Coat Anodized
                                    Fuel System Type: Gasoline
                                    Inlet Size: 8AN O-Ring
                                    Material: Aluminum
                                    Outlet Size: 8AN O-Ring
                                    Pressure: 15-65 PSI
                                    Return Size: 6AN O-Ring
                                    Style: Bypass
                                  • This precision adjustable fuel metering regulator is the ultimate fuel pressure control unit designed to work on all naturally aspirated EFI; turbo and supercharged applications like vehicles that run in the Pro Street; Pro Import and Outlaw classes. This is a 2 port 1:1 boost compensating return style regulator that is adjustable from 15-65 PSI+boost reference and is designed to be used in conjunction with any electric EFI fuel pump. Features built in gauge port; mounting bracket; two AN-8 O-ring fittings and a AN-6 O-ring return fitting. It also features black hard anodize for ultimate durability.
                                  • Allows Adjustment From 15-65 PSI + Boost Reference
                                    CNC Machined Billet Aluminum
                                    Regulates Extreme Flow Volumes From Racing Fuel Systems
                                    Regulates High Fuel Demand For Naturally Aspirated Race Apps
                                    O-Ring Style Fittings Incl. To Adapt To Steel

                                  Holley Holley EFI Filter Regulator - Combines Fuel Filter/Regulator Into 1 Assembly - 175 GPH - 10 Micron Filter - 3/8 in. NPT - Internal Regulator Preset At 59.5 PSI - 12-875

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                                    Features:
                                    • Part #: 12-875
                                    • When converting your fuel system to a return style EFI setup, the biggest challenge can be plumbing the fuel lines. Holley continues to be the leader in fuel system development to make your life easier! The new Holley EFI Filter Regulator assembly simplifies your installation by combining the fuel filter and regulator in one assembly that can be mounted in the rear of the vehicle. Thus making your return line much shorter.
                                    • Free Flow GPH: 175
                                      Fuel System Type: EFI
                                      GPH@4PSI: 175
                                      Micron Rating: 10
                                      Pressure: 40-70 PSI
                                      Thread Size: 3/8NPT
                                    • Minimize The Fuel Line Plumbing When Installing An EFI Conversion
                                      Contains 175 GPH 10 Micron Filter
                                      Regulator is Pre-Set At 59.5 PSI

                                    Holley Holley EFI Filter Regulator - Combines Fuel Filter/Regulator Into 1 Assembly - 175 GPH - 10 Micron Filter -8AN Ports - Internal Regulator Preset At 59.5 PSI - 12-876

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                                      Free Shipping - Ships by 12/06/2022
                                      Features:
                                      • Part #: 12-876
                                      • When converting your fuel system to a return style EFI setup, the biggest challenge can be plumbing the fuel lines. Holley continues to be the leader in fuel system development to make your life easier! The new Holley EFI Filter Regulator assembly simplifies your installation by combining the fuel filter and regulator in one assembly that can be mounted in the rear of the vehicle. Thus making your return line much shorter.
                                      • Free Flow GPH: 175
                                        Fuel System Type: EFI
                                        GPH@4PSI: 175
                                        Micron Rating: 10
                                        Pressure: 40-70 PSI
                                      • Minimize The Fuel Line Plumbing When Installing An EFI Conversion
                                        Contains 175 GPH 10 Micron Filter
                                        Regulator is Pre-Set At 59.5 PSI

                                      Holley HP Billet Fuel Pressure Regulator - 4.2-9 psi -10AN O-Ring Inlet -8AN O-Ring Outlets - Non-Return Style - Carbureted - Gasoline/Diesel/E85 - Black Anodized - 12-843

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                                        Free Shipping - Ships by 12/06/2022
                                        Features:
                                        • Part #: 12-843
                                        • Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. 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 and good looks. Holley Billet Fuel Pressure Regulators are available in a variety of configurations.
                                        • Color: Black Anodized
                                          Fuel System Type: Carbureted
                                          Fuel Type: Gasoline / Diesel / E85
                                          Material: Aluminum
                                          Outlet Size: 8AN O-Ring
                                          Pressure: 4.5-9 PSI
                                          Style: Non-Return
                                        • Holley® Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley®. 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 and good looks. The Holley 12-843 fuel pressure regulator features (1)-10 AN O-ring inlet; (2)-8 AN O-ring outlets.
                                        • Adjustable From 4.5-9 PSI For Precise Fuel Pressure Adjustment
                                          Constructed Of Billet Aluminum For Good Looks
                                          Used In Systems Where A Return Line Is Not Needed
                                          Use With Electric Or Mechanical Pumps
                                          [1] 10AN O-Ring Inlet [2]-8AN O-Ring Outlets

                                        Holley HP Billet Fuel Pressure Regulator - 4.5-9 psi - 3/8 in. NPT Ports - 3/8 in. NPT Return - Carbureted Bypass Style - Gasoline/Diesel/E85 - Black Anodized - 12-841

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                                          Free Shipping - Ships by 12/06/2022
                                          Features:
                                          • Part #: 12-841
                                          • Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. 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 and good looks. Holley Billet Fuel Pressure Regulators are available in a variety of configurations.
                                          • Color: Black Anodized
                                            Fuel System Type: Carbureted
                                            Fuel Type: Gasoline / Diesel / E85
                                            Inlet Size: 0.375 in. NPT
                                            Material: Aluminum
                                            Outlet Size: 0.375 in. NPT
                                            Pressure: 4.5-9 PSI
                                            Return Size: 0.375 in. NPT
                                            Style: Bypass
                                          • Holley® Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley®. 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 and good looks. The Holley 12-841 fuel pressure regulator features 3/8in. NPT in/out ports and a 3/8 NPT return port.
                                          • Adjustable From 4.5-9 PSI For Precise Fuel Pressure Adjustment
                                            Constructed Of Billet Aluminum For Good Looks
                                            Used In Systems With A Return Line Back To Tank
                                            Use With Electric Pumps Only
                                            One 3/8 in. Npt Inlet/One 3/8 in. Npt Outlet
                                            1/8 in. N

                                          Holley HP Billet Fuel Pressure Regulator - 4.5-9 psi - 3/8 in. NPT Ports - 3/8 in. NPT Return - Carbureted Bypass w/Idle Bleed - Gasoline/Diesel/E85 - Black Anodized - 12-842

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                                          $170.00
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                                            Free Shipping - Ships by 12/06/2022
                                            Features:
                                            • Part #: 12-842
                                            • Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. 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 and good looks. Holley Billet Fuel Pressure Regulators are available in a variety of configurations.
                                            • Color: Black Anodized
                                              Fuel System Type: Carbureted
                                              Fuel Type: Gasoline / Diesel / E85
                                              Inlet Size: 0.375 in. NPT
                                              Material: Aluminum
                                              Outlet Size: 0.375 in. NPT
                                              Pressure: 4.5-9 PSI
                                              Return Size: 0.375 in. NPT
                                              Style: Bypass
                                            • Holley® Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley®. 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 and good looks. The Holley 12-842 fuel pressure regulator features 3/8in. NPT in/out ports and a 3/8 NPT return port.
                                            • Adjustable From 4.5-9 PSI For Precise Fuel Pressure Adjustment
                                              Constructed Of Billet Aluminum For Good Looks
                                              Utilizes A Idle Bleed For Precise Control Of Idle Pressure
                                              Used In Systems With A Return Line Back To Tank
                                              1/8 in. NPT Gauge Port
                                              M

                                            Holley HP Billet Fuel Pressure Regulator - 4.5-9 psi - 3/8 in. NPT Ports - Carbureted - Non-Return Style - Gasoline/Diesel/E85 - Black Anodized - 12-840

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                                            $134.00
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                                              Free Shipping - Ships by 12/06/2022
                                              Features:
                                              • Part #: 12-840
                                              • Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. 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 and good looks. Holley Billet Fuel Pressure Regulators are available in a variety of configurations.
                                              • Color: Black Anodized
                                                Fuel System Type: Carbureted
                                                Fuel Type: Gasoline / Diesel / E85
                                                Inlet Size: 0.375 in. NPT
                                                Material: Aluminum
                                                Outlet Size: 0.375 in. NPT
                                                Pressure: 4.5-9 PSI
                                                Style: Non-Return
                                              • Holley® Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley®. 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 and good looks. The Holley 12-840 fuel pressure regulator features 3/8in. NPT in/out ports.
                                              • Adjustable From 4.5-9 PSI For Precise Fuel Pressure Adjustment
                                                Constructed Of Billet Aluminum For Good Looks
                                                Used In Systems Where A Return Line Is Not Needed
                                                Use With Electric Or Mechanical Pumps
                                                One 3/8 in. Npt Inlet and Two 3/8 in. Npt Outl

                                              Holley HP Billet Fuel Pressure Regulator - 4.5-9 psi - 8AN O-Ring Inlet/Outlet - 6AN O-Ring Return - Carbureted Bypass Style - Gasoline/Diesel/E85 - Black Anodized - 12-845

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                                              $242.00
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                                                Free Shipping - Ships by 12/06/2022
                                                Features:
                                                • Part #: 12-845
                                                • Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. 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 and good looks. Holley Billet Fuel Pressure Regulators are available in a variety of configurations.
                                                • Color: Black Anodized
                                                  Fuel System Type: Carbureted
                                                  Fuel Type: Gasoline / Diesel / E85
                                                  Inlet Size: 8AN O-Ring
                                                  Material: Aluminum
                                                  Outlet Size: 8AN O-Ring
                                                  Pressure: 4.5-9 PSI
                                                  Return Size: 6AN O-Ring
                                                  Style: Bypass
                                                • Holley® Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley®. 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 and good looks. The Holley 12-845 fuel pressure regulator features (1)-8 AN O-ring inlet; (1)-8 AN O-ring outlet; (1)-6 AN O-ring return.
                                                • CNC Machined
                                                  Black Bright Dip Anodized Body
                                                  Clear Bright Dip Anodized Ends
                                                  Corrosion Resistance And Good Looks
                                                  Feature A Gauge Port
                                                  Include Mounting Plate For Easy Installation
                                                  1/8 in. NPT Gauge Port

                                                Holley HP EFI Billet Fuel Pressure Regulator - 15-65 psi - 8AN O-Ring Inlet/Outlet - 6 AN O-Ring Return - EFI Bypass Style - Gasoline/Diesel/E85 - Black Anodized - 12-846

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                                                  Free Shipping - Ships by 12/06/2022
                                                  Features:
                                                  • Part #: 12-846
                                                  • Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. 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 and good looks. Holley Billet Fuel Pressure Regulators are available in a variety of configurations.
                                                  • Color: Black Anodized
                                                    Fuel System Type: EFI
                                                    Fuel Type: Gasoline / Diesel / E85
                                                    Inlet Size: 8AN O-Ring
                                                    Material: Aluminum
                                                    Outlet Size: 8AN O-Ring
                                                    Pressure: 15-65 PSI
                                                    Return Size: 6AN O-Ring
                                                    Style: Bypass
                                                  • Holley® Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley®. 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 and good looks. The Holley 12-846 fuel pressure regulator features(1)-8 AN O-ring inlet; (1)-8 AN O-ring outlet; (1)-6 AN O-ring return.
                                                  • Adjustable From 15-65 PSI For Precise Fuel Pressure Adjustment
                                                    Constructed Of Billet Aluminum For Good Looks
                                                    Used In Systems With A Return Line Back To Tank
                                                    Includes Fitting For Manifold Reference
                                                    Use With Electric Pumps Only
                                                    1/8 in. NPT Ga

                                                  Holley Fuel Pressure Regulator - For PN[12-840] Demand Regulator Rebuild Kit

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                                                  $34.71
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                                                  $31.24
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                                                    Free Shipping - Ships by 12/06/2022
                                                    Features:
                                                    • Part #: 12-822
                                                    • Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator.
                                                    • Component Type: Regulator Rebuild Kit
                                                    • Regulator Rebuild Kit for 12-840 Billet Regulator. Includes complete diaphragm; spring and rebuild instructions.
                                                    • Fuel Pressure Regulator Rebuild For Holley 12-840 Regulator
                                                      Includes Diaphragm and Spring

                                                    Holley Fuel Pressure Regulator - For PN[12-841]&[12-842] Bypass Regulator Rebuild Kit

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                                                    $34.71
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                                                    $31.24
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                                                    See Details
                                                      Free Shipping - Ships by 12/06/2022
                                                      Features:
                                                      • Part #: 12-823
                                                      • Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator.
                                                      • Component Type: Regulator Rebuild Kit
                                                      • Regulator Rebuild Kit for 12-841 and 12-842 Billet By-Pass Regulators. Includes complete diaphragm; spring and rebuild instructions.
                                                      • Includes Diaphragm and Spring

                                                      Holley Fuel Pressure Regulator - For PN[12-845]&[12-847] Regulator Rebuild Kit

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                                                      $48.94
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                                                      $44.05
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                                                        Free Shipping - Ships by 12/06/2022
                                                        Features:
                                                        • Part #: 12-825
                                                        • Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator.
                                                        • Component Type: Regulator Rebuild Kit
                                                        • Regulator Rebuild Kit for 12-845 and 12-847 Billet Regulators. Holleys regulator rebuild kits include everything needed to rebuild your billet fuel pressure regulator back to new. Includes diaphragm assembly; pressure spring and rebuild instructions.
                                                        • Includes Diaphragm and Spring

                                                        Holley Fuel Pressure Regulator - For PN[12-846] Regulator Rebuild Kit

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                                                        $48.94
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                                                        $44.05
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                                                          Free Shipping - Ships by 12/06/2022
                                                          Features:
                                                          • Part #: 12-826
                                                          • Holley fuel pressure regulators are designed to precisely control the fuel pressure from the fuel pump to the carburetor. Too much fuel pressure for a given needle and seat assembly can overload the needle and seat and may cause flooding or drivability problems. Each Holley fuel pressure regulator is fully adjustable so regulating the fuel pressure to your engines needs is a simple task. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator.
                                                          • Component Type: Regulator Rebuild Kit
                                                          • Regulator Rebuild Kit for 12-846 Billet Regulator. Holleys regulator rebuild kits include everything needed to rebuild your billet fuel pressure regulator back to new. Includes diaphragm assembly; pressure spring and rebuild instructions
                                                          • Fuel Pressure Regulator Rebuild Kit For PN 12-846 Regulator
                                                            Includes Diaphragm and Spring

                                                          Holley Fuel Pressure Regulator Conversion Kit - Return Style - For Use w/PN[19-350]

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                                                          $91.78
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                                                          $82.60
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                                                            Free Shipping - Ships by 12/06/2022
                                                            Features:
                                                            • Part #: 19-390
                                                            • If you have one of our return style modules like the 19-350, you can convert it to a returnless style with this kit.
                                                            • Returnless System Conversion For 19-350
                                                            Product Info
                                                            Features:
                                                            • Avoid fuel and needle overload with a Holley HP Billet EFI Fuel Pressure Regulator
                                                            • Made from 60F1-T6 billet aluminum with precise machinery
                                                            • Fuel pressure adjustments range from 4.5 to 9 psi
                                                            • Bright-dip anodized body and top boast enhanced durability
                                                            • Compatible with systems using a return line back to tank
                                                            • Complete idle pressure control through idle bleed (varies per regulator)
                                                            • Includes mounting bracket and a 1/8” NPT gauge port
                                                            • Comes with O-ring inlets, outlets and return or 3/8” NPT inlet, outlet and return/bypass ports
                                                            • Suitable for use with electric pumps only (varies per regulator)
                                                            • Your Holley Dominator Billet EFI Fuel Pressure Regulator is backed by a limited warranty
                                                            Description:

                                                            Built for precise fuel pressure control, the Holley Dominator Billet EFI Fuel Pressure Regulator allows adjusting from 4.5 to 9 psi. Boasting strong, machined billet aluminum construction, this regulator is also bright-dip anodized from head to body, so you know it’s made to last.

                                                            Providing compatibility in systems with a return line back to the fuel tank, the EFI fuel regulator offers idle pressure control through idle bleed (depends on specific regulator) and includes a 1/8” NPT gauge port, as well as a mounting bracket. Although only compatible with electric pumps (varies per regulator), this regulator includes either O-ring inlets and outlets or 3/8” NPT inlets and outlets, in addition to return or bypass ports.

                                                            Your Holley Dominator Billet EFI Fuel Pressure Regulator is backed by a limited warranty.

                                                            Manufacturer Info
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