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Holley Fuel Pressure Regulators


Holley
Holley Fuel Pressure Regulators

Product images may differ from actual product appearance.

These Holley Fuel Pressure Regulators are great for adjusting for fuel pressure requirements of various carburetors. Having too much fuel pressure present at the inlet of the carburetor will cause the needle and seat to stay open resulting in flooding and driveability issues.

Holley Standard Pressure Regulator
Recommended for low-pressure applications that require steady flow. Fuel pressure regulators are factory adjusted by Holley to 2.7 psi with a 1-4 psi range. Accepts 3/8" NPT fittings.

Holley Max Pressure Regulator
Adjusts from 4.5 to 9 psi. Also good as a high-pressure bypass. 2 regulators are recommended for dual 4-barrel applications. Accepts 3/8" NPT fittings.

Holley Big-Port Regulator
Die-cast aluminum regulator adjusts from 4.5 to 9 psi. Least restrictive, highest flowing production regulator with one 1/2" NPT inlet port and two 1/2" NPT outlet ports. Mounting hardware included.



4 Products
Standard Pressure Regulator

510-12-804

Standard Pressure Regulator
  • Chrome Finish
  • For use with gasoline
  • Port Size: 3/8'' NPT Inlet/Outlet
  • 1 to 4 PSI
  • Includes Mounting Bracket
    More info on Holley 12-804

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  • $28.95
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    Max Pressure Regulator

    510-12-803

    Max Pressure Regulator
  • Chrome Finish
  • For use with gasoline
  • Port Size: 3/8'' NPT Inlet/Outlet
  • 4-1/2 to 9 PSI
  • Includes Mounting Bracket
    More info on Holley 12-803

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    Installation Instructions for Holley 12-803
  • $28.95
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    Big-Port Regulator

    510-12-704

    Big-Port Regulator
  • Chrome Finish
  • For use with gasoline and alcohol
  • Port Size: 1/2'' NPT Inlet/Outlet
  • 4-1/2 to 9 PSI
  • Includes Mounting Bracket and
    (1)-8AN Inlet & (2)-6AN Outlet Fittings
    More info on Holley 12-704

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    Installation Instructions for Holley 12-704
  • $95.95
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    Regulator Diaphragm Repair Kit

    510-12-807

    Regulator Diaphragm Repair Kit
  • For regulators 510-12-803 and 510-12-804
    More info on Holley 12-807

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    Installation Instructions for Holley 12-807
  • $6.15
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    4 Products