OVERVIEW This CNC machined fuel rail for the Nissan SR20DET features a large 0.69 inch internal bore and high flow ports that accept a wide variety of adapter fittings to suit any custom installation. The black satin anodized finish makes it safe to use with all blends of gasoline and alcohol fuels. It installs to the factory fuel rail mounting points and uses aftermarket top-feed fuel injectors. PORTS AND FITTINGS This fuel rail features 3 large threaded ports (ends and one on the bottom) that are -8AN ORB female. It also has a 1/8NPT female port on the top. 8AN ORB Adapter Fittings 8AN ORB Direct Mount Regulators 1/8 NPT Adapter Fittings Fuel Pressure Gauge Adapters  INTAKE MANIFOLD COMPATIBILITY This fuel rail kit is designed for the Nissan S13 SR20DET (RWD configuration) intake manifold. Radium Engineering has NOT tested on any FWD SR20 intake manifolds. NJECTOR COMPATIBILITY The Radium fuel rail converts from side feed fuel injectors to top feed, allowing the use of high flow aftermarket fuel injectors. Fuel injectors are not included and not sold by Radium Engineering. Reference the diagram below to ensure compatible fuel injectors are obtained. For this fuel rail, a 34mm tall universal injector with 14mm upper and lower O-rings must be used. Most popular injector suppliers offer a fuel injector in this configuration. Refer the injector supplier to this page if needed. NOTE: Short 34mm injectors are used in this kit because hood clearance may become an issue if taller injectors are used. INCLUDED The photo below shows what is included in this kit. Fittings must be purchased separately. -Black Anodized Aluminum Fuel Rail-4x Black Anodized Aluminum 30mm Injector Seats-3x Stainless Steel Mounting Brackets-6x Stainless Steel Mounting Bolts Instruction PDF