PORTS AND FITTINGS The fuel rail ports are tapped for 8AN ORB. 8AN ORB Adapter Fittings 8AN ORB Direct Mount Regulators 8AN ORB Fuel Pulse Dampers Fuel Pressure Gauge Adapters COMPATIBILITY 05-17 Lexus IS 35014-17 Lexus RC 35005-15 Lexus GS 35005-12 Lexus GS 450h 13-17 Lexus IS 300 AWD05-08 Toyota Crown 09-19 Toyota Mark X The physical size and shape of the factory injectors are not found in the aftermarket with a high flowing option. These Radium Engineering 2GR-FSE fuel rails allow the use of very common high flowing Bosch EV14 fuel injectors.   FUEL INJECTORS The OEM fuel injectors are NOT compatible with these fuel rails. The machined ports are compatible with 14mm upper injector O-rings. Because of the tight intake plenum clearance, the injectors must be extremely short. Injector Dynamics ID1050-XDS-34-14-14Injector Dynamics ID1300-XDS-34-14-14Injector Dynamics ID1700-XDS-34-14-14Injector Dynamics ID2600-XDS-34-14-14 FEATURES-Anodized surface finish for wear and corrosion resistance-Lighweight aluminum construction-Inner bore diameter: 0.7 inch-Compatible with aftermarket Bosch EV14 fuel injectors-Can be converted to a pressure regulated return system-No special tools required for installation-Fits under the factory intake manifold and engine cover Instruction PDF