855.444.6872 Contact Us Mon-Sat 10a-6p
DRIVEN BY CARE

Holley Carbureted Bypass Fuel Pressure Regulator 12-803BP

Holley Carbureted Bypass Fuel Pressure Regulator 12-803BP
Holley Carbureted Bypass Fuel Pressure Regulator 12-803BPHolley Carbureted Bypass Fuel Pressure Regulator 12-803BPHolley Carbureted Bypass Fuel Pressure Regulator 12-803BPHolley Carbureted Bypass Fuel Pressure Regulator 12-803BPHolley Carbureted Bypass Fuel Pressure Regulator 12-803BP
$194.99 ea
NEWOUT OF STOCK
Model: 3991281
STANDARD
DELIVERY
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 3/8" NPT in/out ports and a 3/8" NPT return port.
Features:
  • Adjustable fuel regulation from 4-1/2 to 9 psi
  • Preset to 7psi
  • 3/8” 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
  • Polished finish
  • Mounting bracket included
The 803BP is designed for use with an electric fuel pump with a return line in the system. If you are using a mechanical fuel pump, use the 12-803 regulator. The mounting holes in the regulator are not threaded. The screws included are self-tapping for use in installation.
Installation Notes:
The 803BP is designed for use with an electric fuel pump with a return line in the system. If you are using a mechanical fuel pump, use the 12-803 regulator. The mounting holes in the regulator are not threaded. The screws included are self-tapping for use in installation.

About Holley Performance Products

Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors powered every Monster Energy NASCAR Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI products power these cars and are dominating the performance world. Holley products for GM's popular LS engine are dominating the LS scene as well. Holley's products also include performance fuel pumps, intake manifolds and engine dress-up products for street performance, race and marine applications. As a single solution or partnered with products from other Holley companies we can give you the edge you need over the competition!

Downloads:

Download Name File Size
holleyfuelsystems_chart1.pdf360.32KB
199r7914-3rev6.pdf591.79KB

Videos:

Specifications:

Color Shiny
Emission Code 5
Fuel System Gasoline
Fuel Type Gasoline
Inlet Size 3/8 inch NPT
Material Aluminum
Outlet Size 3/8 inch NPT
Part Type Fuel Pressure Regulator
Pressure Range 4.5-9 PSI
Product Type Fuel Pressure Regulator
Proposition 65 www.P65Warnings.ca.gov
Return Size 3/8 inch NPT
Style Bypass
Warranty Limited 90 Day

Reviews:

Write a Review
* Your Name:
* Email (This will not be displayed)
* Rating:
Comments:

Ask a question about

Holley Carbureted Bypass Fuel Pressure Regulator 12-803BP:
Classic Nova 2024