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Holley Carbureted Fuel Pressure Regulator

Holley 12-804


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Holley Carbureted Fuel Pressure Regulator $31.32
Carbureted Fuel Pressure Regulator
  • For Use With Gasoline
  • Port Size: (1) 3/8" NPT Inlet/(2) 3/8" NPT Outlet
  • 1-4 psi.
  • Includes Mounting Bracket
  • Cast Aluminum
  • Chrome Finish

  • Holley 12-804 Details

    Carbureted Fuel Pressure Regulators

    Recommended for low-pressure applications that require steady flow. Fuel pressure regulators are factory adjusted by Holley to 2.7 psi with a 1-4 psi range. Accepts 3/8" NPT fittings.

  • .220 in. Restriction
  • Low Pressure 1-4 PSI
  • High Pressure 4.5-9 PSI
  • Not Alcohol Compatible

  • Specifications:

    Mounting Bracket Included
    Fittings Included
    Boost/Vacuum Reference Port
    Gauge Port
    Inlet Attachment
    Female Threads
    Outlet Attachment
    Female Threads
    Pressure Range (psi)
    Sold individually
    Regulator Finish
    Regulator Location
    Regulator Material
    Regulator Style
    Return Fitting Size (in.)
    3/8 NPT
    Inlet Size (in.)
    3/8 NPT
    Outlet Size (in.)
    3/8 NPT
    Outlet Quantity
    Inlet Quantity
    Manufacturer's Part Number:

    Holley Die Cast Fuel Pressure Regulators are designed to precisely control the fuel pressure from the fuel pump to the fuel distribution system. Each Holley fuel pressure regulator is fully adjustable and regulating the fuel pressure to your engines specific needs is easy. All Holley regulators are pre-set at the factory so there is no guesswork when first installing the regulator. Pumps are available in a veriety of pressure ranges for both EFI and carbureted applications.

    JEGS Easy Kits are designed by JEGS high performance racing professionals to help you get all the performance parts you need for your race car, hot rod or truck.

    12-804 is rated 4.4 out of 5 by 10.
    Rated 5 out of 5 by from Great features easily installed Product arrived on time. The product was easily installed. And was exactly four PSI as stated. But one of the greatest things is a rebuild kit is available through Jegs.
    Date published: 2016-10-21
    Rated 5 out of 5 by from Problem solved Best regulator for the Jeep Weber carb conversion. Accurate and hols pressure. Used the second port for a pressure gauge.
    Date published: 2016-05-18
    Rated 5 out of 5 by from great as always a great product, its holley how can that be bad. made in usa
    Date published: 2015-12-19
    Rated 5 out of 5 by from Great low pressure regulator Purchased this several weeks ago and has made the best performance gains. Consistent even fuel pressure, gives great control. Only thing I would do is add a permanent fuel pressure gauge into the system to make adjustments easier. Trying to run the motor and make pressure changes with a general fuel pressure gauge is a little awkward but not terrible. I will look to holley in the future when I need fuel pressure control.
    Date published: 2015-10-10
    Rated 5 out of 5 by from Great shopping experience Wow, I ordered my parts and fast professional service. Love doing business with vendors like this!!
    Date published: 2015-02-15
    Rated 5 out of 5 by from Easy install We bought this product for our 1986 Jeep CJ and it installed very easy and we are anxious to have it on the road again :)
    Date published: 2014-12-29
    Rated 5 out of 5 by from Problem solved. The regulator solved the problem of flooded fuel bowels on my converted 4160 to 4150 390CFM 8007 Holley. On a well built 310 c.i. Ford in a 72 Bronco.
    Date published: 2014-11-02
    Rated 4 out of 5 by from Did the job as advertised and was very easily installed
    Date published: 2016-11-20
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    Some parts are not legal for use in California or other states with similar laws / regulations