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. Die Cast Aluminum Construction 3/8 NPT Inlet/Outlet/Return Ports 1/8 in. NPT Gauge Port Boost Reference 1:1 Additional Attributes: GTIN: 00090127000373 Return Size: 0.375 in. NPT WARNING CA Proposition 65: Yes WARNING CA Proposition 65 Message: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov Color: Black Fuel System Type: EFI Fuel Type: Gasoline Inlet Size: 0.375 in. NPT Material: Aluminum Outlet Size: 0.375 in. NPT Pressure: 15-60 PSI Extened Information: Emissions : Emission verification to be determined in ACES, vehicle application data. Life Cycle Status: Available To Order Packaging: Quantity of Each: Package UOM: Dimension: 3.0000 x 2.0000 x 3.0000 inches