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Holley 12-804 - Holley Fuel Pressure Regulators



Holley 12-804 - Holley Fuel Pressure Regulators
Holley 12-804 - Holley Fuel Pressure Regulators

JEGS Part Number: 510-12-804

Standard Pressure Regulator
  • Chrome Finish
  • For use with gasoline
  • Port Size: 3/8" NPT Inlet/Outlet
  • 1 to 4 PSI
  • Includes Mounting Bracket
      $29.67 Ships

    Holley 12-804 Details

    Standard Pressure Regulator

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

  • Holley Fuel Pressure Regulators

    These Holley Fuel Pressure Regulators are great for adjusting for fuel pressure requirements of various carburetors. Having too much fuel pressure present at the inlet of the carburetor will cause the needle and seat to stay open resulting in flooding and driveability issues.

    Holley Standard Pressure Regulator
    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.

    Holley Max Pressure Regulator
    Adjusts from 4.5 to 9 psi. Also good as a high-pressure bypass. 2 regulators are recommended for dual 4-barrel applications. Accepts 3/8" NPT fittings.

    Holley Big-Port Regulator
    Die-cast aluminum regulator adjusts from 4.5 to 9 psi. Least restrictive, highest flowing production regulator with one 1/2" NPT inlet port and two 1/2" NPT outlet ports. Mounting hardware included.

    Holley 12-804

    Manufacturer's Part Number:
    12-804
    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 4 out of 5 by from A good value Does what it's supposed to for a low price. Don't forget that you'll need the brass fittings as well as they are not included. This is the second one I've purchased in the 1-4 PSI range as I am finding that my carburated vehicles are very sensitive to ethanol laced fuel.
    Date published: 2015-09-20
    Rated 1 out of 5 by from Does Not work as it should Output pressure goes up to input pressure. .my input pressure was 7 lbs ...Very disappointed in Holley..I thought I was getting quality, that is why I didn't buy an off brand product...
    Date published: 2015-02-14
    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 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 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 great as always a great product, its holley how can that be bad. made in usa
    Date published: 2015-12-19
    • 2016-02-07T09:27CST
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