

Holley Performance 12-804 Fuel Pressure Regulator
Key item features
- Adjustable Pressure: Offers adjustable fuel regulation from 1 to 4 PSI, allowing precise control for various engine needs.
- Port Configuration: Features 3/8" NPT ports, including one inlet and two outlets, for versatile plumbing options.
- Factory Pre-set: Arrives pre-set at 2.8 PSI from the factory, simplifying initial installation and setup.
- Application Specific: Designed for street/strip carbureted applications, ensuring optimal performance in these setups.
- Inlet Limitation: Has an inlet pressure limitation of 7 PSI, crucial for proper system operation.
- Included Hardware: Comes with a mounting bracket for convenient and secure installation.
- Flow Restriction: Incorporates a .220" (7/32") restriction for controlled fuel flow.
- Aesthetic Finish: Boasts a chrome finish, providing a visually appealing component.
Specs
- Vehicle model12-804
- Vehicle fitment typeSpecific
- Automotive specialty part typeFuel Pressure Regulator
- ManufacturerHolley
- FeaturesAdjustable
- MaterialAluminum
- Free shipping
Free 60-day returns
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About this item
Product details
Two Port
Adjustable from 1 to 4 PSI;
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 at 2.8 PSI so there is no guesswork when first installing the regulator. The Holley 12-804 fuel pressure regulator features 3/8 in. NPT in/out ports.
***The inlet pressure limitation is 7 psi.;
- Adjustable fuel regulation from 1 to 4 psi
- .220" (7/32") restriction
- 3/8" NPT ports ( 1 in, 2 out)
- Chrome finish
- Mounting bracket included
- Pre-set at 2.8 PSI
Specifications
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Vehicle fitment type
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Customer ratings & reviews
Filtered and sorted results would be available on the new 'Customer ratings & reviews' page.
Showing 1-3 of 11 reviews
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.
Excellent Addition
I have a 1963 beetle with dual crabs. It has to be set at 1.75 PSI to operate properly. I have tried all different kinds that VW people have recommended, but they all began leaking right away. I took a chance on this one and it works perfectly. Easy to install and even easier to adjust. Now I can actually enjoy this old beauty. Holley all the way and thanks to JEGS for carrying such quality items.
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.
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