

Holley Performance 12-803 Fuel Pressure Regulator
Key item features
- Adjustable Pressure: Provides adjustable fuel regulation from 4.5 to 9 PSI, allowing precise control of fuel pressure for optimal engine performance.
- Port Configuration: Features 3/8" NPT ports, including one inlet and two outlet ports, for versatile plumbing options.
- Flow Restriction: Incorporates a .220" (7/32") restriction to manage fuel flow effectively.
- Durable Finish: Boasts a chrome finish, contributing to its aesthetic appeal and potential durability.
- Included Hardware: Comes with a mounting bracket for straightforward installation.
- Application Focus: Designed for Street/Strip Carbureted Applications, ensuring suitability for specific vehicle types.
- Pre-set Calibration: Factory pre-set to eliminate guesswork during initial installation, simplifying the setup process.
Specs
- Vehicle model12803
- Vehicle fitment typeSpecific
- Automotive specialty part typeFuel Pressure Regulator
- ManufacturerHolley
- FeaturesAdjustable
- MaterialPlastic
- Free shipping
Free 90-day returns
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About this item
Product details
Two Port
Adjustable from 4.5 to 9 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 so there is no guesswork when first installing the regulator. The Holley 12-803 fuel pressure regulator features 3/8 in. NPT in/out ports.;
- Adjustable fuel regulation from 4-1/2 to 9 psi
- .220" (7/32") restriction
- 3/8" NPT ports ( 1 in, 2 out)
- Chrome finish
- Mounting bracket included
Specifications
Vehicle model
Vehicle fitment type
Automotive parts division
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Warranty
Warranty information
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Customer ratings & reviews
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Showing 1-3 of 21 reviews
Just what it should be.
I've got a mean 1938 Chevy that was put together about 45 years ago. The electric fuel pump went bad a while back and I replaced it with a Jeg's pump which had too much pressure for the 800 Holley double-pumper. I wanted to keep the car as close as possible to the original look and build and didn't want a regulator and gauge showing. The Holley regulator said it was preset so I mounted it under the car on the frame and didn't use a gauge. The pressure setting from the factory works fine and I didn't have to stick a gauge anywhere,
High Quality!
This regulator may be inexpensive, but it is definitely not cheap. The whole assembly is solid and well constructed. Adjustments are very easy to make if the preset pressure is not preferred, and the pressure is maintained accurately regardless of temperature. Be sure to attach the mounting bracket to the regulator before attaching the inlet fuel line!
Holley regulator
Been doing a lot of business with Jegs as of recent and will continue. Their prices are reasonable and the products are great. Thank you for being there for us gearheads
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