Street/Strip Carbureted Applications 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" 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

Information:

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.

Application Summary:

Year Make/Model
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 3/8in. NPT in/out ports.
Attributes
ASIN B00029JC6C
Brand Holley, Holley
California Proposition 65 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Category Air and Fuel Delivery
Color Shiny, Shiny
Country of Origin (Primary) KR
Emission Code 5, 3
Fuel System Gasoline, Gasoline
Fuel System Type Gasoline
Fuel Type Diesel, Gasoline
GTIN 00090127020227
Harmonized Tariff Code (Schedule B) 8409915085
Hazardous Material Code N
Inlet Port Diameter 3/8, 3/8
Inlet Size 0.375 in. NPT, 3/8 inch NPT
Life Cycle Status Code Available to Order
Material Aluminum, Aluminum
NAFTA Preference Criterion Code D
Outlet Port Diameter 3/8, 3/8
Outlet Size 0.375 in. NPT, 3/8 inch NPT
Pressure 4.5-9 PSI
Pressure Range 4.5-9 PSI, 4.5-9 PSI
Product Type Fuel Pump, Fuel Pressure Regulator
SDR Required Flag N
Sale Category Air and Fuel Delivery
Style Non-Return, Non-Return
Warning California Proposition 65, California Proposition 65
Warranty Limited 90 Day, Manufacturer's Limited 90 Day Warranty

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Holley 12-803 REG, FUEL PRESSURE 4.5-9 PSI M/P

Product Information

  • Brand: Holley
  • Product Number: 12-803

Vehicle Fitment