Holley In-Line Fuel Pressure Regulator - 4-9 psi - 10 AN Female O-Ring Inlet - 10 AN Female O-Ring Outlet - 10 AN Female O-Ring Return - 2 Port - Double Adjustable - E85 / Gas / Methanol RS00500308 Zamp Z-23 Series replacement helmet

Zamp Z-23 Series replacement helmet shield

Special cut out bottom for 250/270 available See 40 Series KIT

negative ground systems

Minor clearancing of block at pan rails required

Holley In-Line Fuel Pressure Regulator - 4-9 psi - 10 AN Female O-Ring Inlet - 10 AN Female O-Ring Outlet - 10 AN Female O-Ring Return - 2 Port - Double Adjustable - E85 / Gas / Methanol RS00500308 Zamp Z-23 Series replacement helmetHolley's new double adjustable fuel pressure regulators are designed for belt or cable driven pumps where fuel flow changes with engine rpm. These regulators are compatible with E85 and alcohol applications. Made from billet aluminum, these regulators are offered in both 2 Port and 4 Port models to complete your fuel system requirements. The idle adjustment design is strategically placed so that none of the ports are blocked like other designs. These