Holley Billet Fuel Adjustable Regulator EFI systems 15 - 65 PSI # HO12-848Holley Billet Fuel Adjustable Regulator EFI systems 15 65 PSI # HO12 848 Fuel Pressure Regulator, Billet Aluminum, Black Clear Anodized, 40 70 psi., 10 AN Female Inlet Oulet, Each Pressure Range (psi): 40 70 Regulator Style: Return Regulator Location: Inline Boost Vacuum Reference Port: Yes Gauge Port: Yes Inlet Quantity: One Inlet Size: 10 AN O ring Inlet Attachment: Female threads Outlet Quantity: One Outlet Size: 10 AN O ring Outlet Attachment: