Product details:

Holley 12-864: Fuel Pressure Regulator, VR Series, Inline, Return Style, 40-100 psi, Billet Aluminum, Black/Clear Anodized - Holley VR Series fuel pressure regulators are part of their VR1 and VR2 Series brushless fuel systems product line. Designed to handle large volumes of fuel flow, they are capable of supporting 3,000+ horsepower. They are CNC-machined from 6061 T-6 billet aluminum for strength and have bright dip anodized black bodies with clear dip anodized tops for corrosion resistance. Holley VR Series fuel pressure regulators are available in 2-port and 4-port versions for carbureted or EFI-equipped engines.Features include:. EFI regulators are adjustable from 40 to100 psi . Carbureted regulators are adjustable from 4 to 9 psi . Compatible with gasoline, methanol, and E85. 1/8 in. NPT gauge port . Designed for use with Holley VR1 and VR2 Series brushless in-line fuel pumps . Can be referenced on a 1:1 ratio--a barb fitting and a -4 AN fitting are included for reference connection . 2-port regulators feature -10 AN O-ring inlet/outlet and return . 4-port regulators feature -10 AN O-ring inlet and return with four -8 AN O-ring outlets