Appropriate fittings must be selected based on the specific application. Ample space around the fuel rail port(s) is necessary for larger accessories such as fuel pressure regulators, fuel pressure gauges, and fuel pulse dampers. To verify clearance, the dimensional drawings on the product pages can be used as a reference guide.
Reference the chart below to be sure the proper fuel rails are ordered.
Manufactured with a large internal bore, the fuel rails can support all necessary engine power requirements. They are CNC machined from solid 6061 aluminum, black anodized, and laser etched for a high quality surface finish.
For injector height flexibility and thermal insulation, 2 sets of machined phenolic spacers are included. All injectors must use 11mm diameter upper O-rings just like the OEM Subaru injectors.
The fuel rails are compatible with all fuel types including popular alcohol mixtures such as E85.
20-0467-02 FUEL RAILS, TOP FEED UPGRADE, SUBARU EJ
These fuel rails have the same mounting and injector spacing as the 20-479-02 (below). However, these fuel rails feature a 8AN ORB port machined in the underside center of each fuel rail.
NOTE: The center port bulge (shown above) can create an interfere with early AVCS solenoids found in the EJ207 and JDM EJ205. See 20-0479-02 below.
Included:
-Black Anodized Laser Etched Aluminum Fuel Rails (x2)
-Phenolic Thermal Insulating Press-In Spacers, 20mm (x4)
-Phenolic Thermal Insulating Press-In Spacers, 15mm (x4)
-Phenolic Thermal Insulating Press-In Bolt Washers (x4)
-Stainless Steel M8x1.25 Mounting Bolts (x4)
20-0479-02 FUEL RAILS, TOP FEED UPGRADE, SUBARU EJ, TOP PORT
These fuel rails have the same mounting and injector spacing as the 20-467-02 (above). However, because each fuel rail has an 8AN ORB "top port", there is no center port interference with the EJ207 and JDM EJ205 engines that have the early AVCS solenoids.
Picture above shown with Radium Engineering Fuel Rail Adapter P/N: 20-0372.
Included:
-Black Anodized Laser Etched Aluminum Fuel Rails (x2)
-Phenolic Thermal Insulating Press-In Spacers, 20mm (x4)
-Phenolic Thermal Insulating Press-In Spacers, 15mm (x4)
-Stainless Steel M8x1.25 Mounting Bolts (x4)
20-0478 FUEL RAIL PLUMBING, SUBARU EJ
This engine bay plumbing kit is designed to be used with Radium fuel rails and includes all the necessary fittings, hose and other components to complete the installation and have a complete operating system. This kit plumbs the fuel rails in series, beginning and ending at the factory hard lines near the LH strut tower. It is compatible with all factory hard lines, whether SAE quick connect or hose barb connections. An adjustable Radium Direct Mount Regulator (DMR) is included along with a Radium fuel pressure gauge to calibrate the DMR. The 6AN swivel adapter fittings for the fuel rail ports are low profile making them ideal for the tight spaces associated with the EJ motor. Pushlock hose-ends are easy to work with, making installation quick and painless. A variety of hose-ends are provided so the installer can custom tailor the fuel line routing for their specific vehicle.
Unlike standard fuel hose that degrades with alternate fuels, the provided Vapor Shield hose is compatible with gasoline and alcohol blends, including E85. Furthermore, the hose has a special construction that prevents vapor permeation. And unlike PTFE, this fuel hose absorbs unwanted fuel injector pulses and has an improved bend radius.
Included:
-Direct Mount Regulator
-6AN PushLok Hose Ends
-6AN Adapter Fittings
-SAE Quick Connect Fittings
-Vapor Shield EFI Hose
-Stainless EFI Hose Clamps