Carburetor Fuel Pressure Regulator HP Billet Fuel Pressure Regulator HP Billet Fuel Pressure Regulator; 4.5-9 psi; 8AN O-Ring Inlet/Outlet; 6AN O-Ring Return; Carbureted Bypass Style; Gasoline/Diesel/E85; Black Anodized; SPECIFICATIONS: Color: Black Anodized Material: Aluminum Pressure: 4.5-9 PSI Style: Bypass FEATURES: CNC Machined Black Bright Dip Anodized Body Clear Bright Dip Anodized Ends Corrosion Resistance And Good Looks Feature A Gauge Port Include Mounting Plate For Easy Installation 1/8 in. NPT Gauge Port 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. Holley Billet Fuel Pressure Regulators are available in a variety of configurations. Holley has been the undisputed leader in fuel systems for over 100 years. Holley carburetors have powered every NASCAR Sprint Cup team and nearly every NHRA Pro-Stock champion for four decades. Now, Holley EFI is dominating the performance world as well as our products for GM's LS engine. Holley's products also include performance fuel pumps, intake manifolds & engine dress-up products for street performance, race and marine applications. As a single solution, or partnered with products from other Holley companies - Hooker Headers, Flowtech Exhaust, NOS Nitrous, Weiand, Earl's Performance Plumbing, or Diablosport - Holley products can give you the edge you need over the competition.