Holley HP Billet EFI Bypass Fuel Pressure Regulator 12-846

Item #21935

Made in the USA
Holley HP Billet EFI Bypass Fuel Pressure Regulator 12-846
Street/Strip EFI Applications
Two Port
Adjustable from 15 to 65 PSI
Boost Reference - 1:1
- +
Quantity: close


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. They feature a black bright dip anodized body and a clear bright dip anodized top for corrosion resistance and good looks. The Holley 12-846 fuel pressure regulator features(1) -8 AN O-ring inlet, (1) -8 AN O-ring outlet, (1) -6 AN O-ring return.


  • Adjustable from 15-65 psi for precise fuel pressure adjustments
  • Constructed of billet aluminum with a black anodized base and clear anodize top for good looks
  • Used in systems with a return line back to tank
  • Includes fitting for manifold reference
  • Use with electric pumps only
  • (1) -8 an o-ring inlet, (1) -8 an o-ring outlet, (1) -6 an o-ring return
  • 1/8" NPT gauge port
  • Designed for use with the Holley® HP™ in-line fuel pumps or other high pressure electric pumps where return line is needed
  • Mounting bracket included


(1)Holley HP Billet EFI Bypass Fuel Pressure Regulator 12-846


Brand: Holley
Color: Black Anodized
Emission Code: 5
Fuel System: EFI
Fuel Type: Gasoline/ Diesel/ E85
Inlet Size: 8 AN O-Ring
Material: Aluminum
Outlet Size: 8 AN O-Ring
Pressure Range: 15-65 PSI
Product Type: Regulator
Return Size: 6 AN O-Ring
Style: Bypass
Part Number: 12-846

This part is legal for sale or use on Emissions Controlled Vehicles, Uncontrolled (Non-Emissions Controlled) Vehicles, and Racing Use Only Vehicles because it does not affect vehicle emissions and is not covered by emissions regulations.


1 Year Manufacturers Warranty

Eastwood Offers Free Lifetime Technical Support

Click here for product SDS information

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