HolleyAdjustable Billet By-Pass Regulator, 4-65 PSI - -6 AN
At some point Holley must have decided to make the single most cost-effective billet adjustable return-style fuel pressure regulator on the market. And when they made that decision, here is the home run they hit.
This is the finest adjustable regulator at its price point available, bar none. No other matches its rock-solid construction, drop-dead good looks, or amazing versatility. Need a fuel pressure regulator for carbureted applications? This one offers 4- to 15-PSI adjustability and an amazing 96 GPH (363 LPH) flow capability at 8 PSI. That means if your fuel pump can support it this regulator can flow enough gasoline to support a 955 HP naturally aspirated engine or 772 HP boosted engine operating at that pressure.
Or maybe you need a regulator for an EFI application. Simply change the included spring and now your adjustment range jumps to 15 to 65 PSI. Even at 60 PSI, this regulator still flows 70 GPH (265 LPH), meaning with an adequate fuel pump this regulator can feed a 700 HP (NA) or 560 HP (Boosted) gasoline application. (Adjust all numbers accordingly for alternate fuels.)
This regulator is not finished there. It includes a vacuum reference port as well as a port for a mechanical pressure gauge, available separately. Unless you have need for something that will support even larger horsepower, this is absolutely the regulator you seek.
Not Sure? Review this product documentation before you buy!
Installation Instructions
Holley Billet Fuel Pressure Regulators (HP and Dominator)
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