HP Billet Fuel Pressure RegulatorAdjustable 4.5 To 9 PSI With Bypass Return Suit CarburettorApplicationBrand: HOLLEYPart Number: HO12-845Description: Holley Billet Fuel PressureRegulators are part of a complete line of fuel system products from Holley. They areprecision machined from 6061-T6 billet aluminium 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. The Holley 12-845 fuel pressure regulator features (1) -8 AN O-ring inlet, (1) -8AN O-ring outlet, (1) -6 AN O-ring Return. FEATURES: (1) -8 ANO-ring inlet, (1) -8 AN O-ringoutlet, (1) -6 AN O-ring return Used in systemswith a return line back to tank Desighned for usewith holley HP in-line fuel pumps or other high pressure pumps where return line is needed Adjustable from4.5-9 PSI for precise fuel pressure adjustments Black bright dip anodized body and aclear bright dip anodized top 1/8"NPT gauge port