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Adjustable Billet By-Pass Regulator-3/8" NPT

: In stock

: Fuel Pressure Regulators

: Holley

: 12-879

$199.95 $224.95

Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from...

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Holley Billet Fuel Pressure Regulators are part of a complete line of fuel system products from Holley. They are precision machined from 6061-T6 billet aluminum for strength and durability. These regulators are adjustable from 4-65 psi and will handle both carbureted and EFI applications. A second pressure spring is included allowing you to increase the fuel pressure range up to 65 psi for EFI systems. They are offered with two port sizes, 3/8" NPT or 6AN to adapt to your new or existing fuel lines. So, if you are currently running a carbureted system but plan to upgrade to EFI in the future, these regulators will have you covered either way.

Your order of 100$ or more gets free standard delivery.

  • Standard delivered 4-5 Business Days
  • Express delivered 2-4 Business Days

Orders are processed and delivered Monday-Friday (excluding public holidays)


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Adjustable Billet By-Pass Regulator-3/8" NPT

$199.95 $224.95