COMPATIBILITY -Mitsubishi Evolution I 4G63-Mitsubishi Evolution II 4G63-Mitsubishi Evolution III 4G63-Mitsubishi Galant VR4 4G63-Mitsubishi Eclipse (DSM) 4G63-Plymouth Laser (DSM) 4G63-Eagle Talon (DSM) 4G63 PORTS AND FITTINGS The fuel rail features four (4) threaded ports that are tapped for 8AN ORB. 8AN ORB Adapter Fittings 8AN ORB Direct Mount Regulators 8AN ORB Fuel Pulse Dampers Fuel Pressure Gauge Adapters OVERVIEW Manufactured with a large 0.69" internal bore, the fuel rail can support all necessary engine power requirements. The rail is CNC machined from solid 6061 aluminum, anodized and laser etched for a high quality surface finish. It is compatible with all fuel types including popular alcohol mixtures such as E85. The Radium fuel rail eliminates the OEM 2-bolt inlet flange which uses a restrictive 0.22" (5.7mm) orifice. All four ports use -8AN ORB threads. The fuel rail reuses the 3 OEM mounting spacers (Mitsubishi MD095402) to thermally insulate the fuel rail from the intake manifold. Furthermore, thermal insulating washers are provided for the stainless steel mounting hardware. Mounting bosses mimic the factory fuel rail for securing the cable(s) that pass by with the OEM brackets.  FUEL INJECTOR COMPATIBILITY This fuel rail is compatible with factory or OEM equivalent fuel injectors. If upgrading fuel injectors, consult your aftermarket injector supplier for details. Radium Engineering cannot specify any further injector dimensions other than stating ‘OEM equivalent’. 20-0533-PK Fuel Rail Plumbing, Mitsubishi, Early 4G63The plumbing kit includes the items in the image below and is ideal when when using the factory regualtor and fuel lines.  This kit replaces the restrictive OEM banjo bolt and runs a 6AN (3/8") hose directly from the fuel filter to the fuel rail. In addition, two FPR adapters are included to reuse either variation of the Mitsubishi OEM fuel pressure regulator. All necessary fittings are included for an easy bolt-in installation. Instruction PDF