Fuel Pressure Regulator, Non-Return, 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" 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
Details
Fuel Pressure: 4.5-9 psi
Gallons Per Hours: N/A
Gauge Port: No
Inlet Port: 3/8" NPT
Outlet Port: 3/8" NPT
Regulator Style: Non-Return
Return Port: No
Vacuum or Boost Port: No
Available downloads:
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The mounting holes in the regulator are not threaded. The screws included are self-tapping for use in installation. Regulator is compatible with Diesel #1 and Diesel #2.

Fuel Pressure Regulator, Non-Return, 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" 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
Details
Fuel Pressure: 4.5-9 psi
Gallons Per Hours: N/A
Gauge Port: No
Inlet Port: 3/8" NPT
Outlet Port: 3/8" NPT
Regulator Style: Non-Return
Return Port: No
Vacuum or Boost Port: No

/media/c2/c6/2f/1730301583/holleyfuelsystems_chart.pdf?1730301583

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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 & 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!