Holley EFI Billet Bypass Fuel Pressure Regulator Kit # HO12-894KITFuel Pressure Regulator, Boost Adjustable, 15 90 psi, Inline, 6AN Inlet, Outlets, Return Style, Aluminum, Black Clear Anodized, Universal, Kit Regulator Pressure (psi): 15 90 Regulator Style: Return Regulator Location: Inline Boost Vacuum Reference Port: Yes Gauge Port: Yes Inlet Quantity: 1 Regulator Inlet Size: 6 AN O ring Inlet Attachment: Female straight cut O ring Outlet Quantity: 2 Regulator Outlet Size: 6 AN O ring Outlet Attachment: Female