This Holley VR Series billet fuel pressure regulator is part of the VR1 and VR2 Series brushless fuel systems lineup, built to support engines making 3,000+ horsepower that require high fuel flow volumes. The 4-port EFI version is precision machined from 6061-T6 billet aluminum with a black bright dip anodized body and clear anodized top for corrosion resistance, and references boost on a 1:1 ratio.
Specifications:
- Product Type: Fuel Injection Pressure Regulator
- Fuel Pressure Range: 40-100 PSI
- Fuel System: EFI
- Inlet Quantity: One -10 AN ORB
- Outlet Port Diameter: -8 AN ORB
- Return Size: -8 AN O-Ring
- Material: Billet Aluminum
- Color/Finish: Black Anodized
- Fuel Type: Diesel, Gasoline
- Part Number: 12-864
Compatible with Diesel #1 and Diesel #2 fuel. Always use a fuel pressure gauge to monitor changes during adjustment.
FAQ
What is the fuel pressure range of the 12-864 regulator?
It adjusts from 40 to 100 PSI, referenced on a 1:1 ratio for EFI applications.
What material is the regulator made from?
It's precision machined from 6061-T6 billet aluminum with a black anodized body and clear anodized top.
What fuel types is this regulator compatible with?
It's compatible with gasoline and diesel (#1 and #2).
What inlet and outlet sizes does it use?
One -10 AN ORB inlet, four -8 AN ORB outlets, and a -8 AN O-ring return.

