Product Description
Radium Engineering Subaru EJ Fuel Rails, All
Click here to download installation instructions (PDF)
PORTS AND FITTINGS
The fuel rail ports are tapped for 8AN ORB.
8AN ORB Adapter Fittings can be found HERE.
8AN ORB Direct Mount Regulators can be found HERE.
8AN ORB Fuel Pulse Dampers can be found HERE.
Want a complete engine bay plumbing kit that includes regulator, lines and fittings? Click HERE.
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.
20-0567-02 FUEL RAILS, TOP FEED UPGRADE, SUBARU EJ
VEHICLE COMPATIBILITY
02-14 Subaru Impreza WRX (USDM)
07-14 Subaru Impreza WRX (JDM/EDM)
07-21 Subaru Impreza WRX STi
06-13 Subaru Forester XT
01-03 Subaru Legacy GT (JDM)
07-12 Subaru Legacy GT
07-12 Subaru Outback XT
05-06 Saab 9-2X Aero
FUEL INJECTOR COMPATIBILITY
This fuel rail is compatible with factory or OEM equivalent fuel injectors. The machined injector ports are designed for 11mm upper injector O-rings. If upgrading fuel injectors, consult your aftermarket injector supplier for details. Radium Engineering cannot specify any further injector dimensions other than stating ‘OEM equivalent’.
OVERVIEW
These fuel rails have the same mounting and injector spacing as the 20-0577-02. However, these fuel rails feature a 8AN ORB port machined in the underside center of each fuel rail, as shown below.
NOTE: The center port bulge can create an interfere with early AVCS solenoids found in the EJ207 and JDM EJ205. If this is the case, use P/N: 20-0577-02 below.
INCLUDED
-Black Anodized Laser Etched Aluminum Fuel Rails (x2)
-Thermal Insulating Press-In Spacers, 20mm (x4)
-Stainless Steel M8x1.25 Mounting Bolts (x4)
20-0568-02 FUEL RAILS, TOP FEED CONVERSION, SUBARU EJ
VEHICLE COMPATIBILITY
04-06 Subaru WRX STi (USDM)
04-05 Subaru Forester XT
05-06 Subaru Legacy GT
04-06 Subaru Legacy GT (JDM)
05-06 Subaru Outback XT
FUEL INJECTOR COMPATIBILITY
Do NOT purchase "WRX Fitment" injectors. Read below regarding injector fitment information.
Below are some of the many fuel injectors that are a direct fit:
Injector Dynamics ID1050-XDS-34-14-14
Injector Dynamics ID1300-XDS-34-14-14
Injector Dynamics ID1700-XDS-34-14-14
Injector Dynamics ID2600-XDS-34-14-14
OVERVIEW
Each fuel rail features three 8AN ORB threaded ports (6 total). Press-fit spacers are included to thermally insulate intake manifold heat transfer.
The "conversion" fuel rails convert the OEM side feed fuel injector setup to top feed allowing the use of high flow fuel injectors (not included). The fuel rail injector bores are 14mm ID. 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 engraved for a high quality surface finish. The fuel rails are compatible with all fuel types including popular alcohol mixtures such as E85.
The four billet injector seats are anodized and laser etched and provide a sealed receptacle for top feed fuel injectors. The seats are designed for injectors with 14mm lower O-rings.
The four billet injector seats are anodized and laser etched and provide a sealed receptacle for top feed fuel injectors. The seats are designed for injectors with 14mm lower O-rings.
INCLUDES
-Black Anodized Laser Etched Aluminum Fuel Rails (x2)
-Green Anodized and Laser Etched 22mm Injector Seats (x4)
-Thermal Insulating Press-In Spacers, 15mm (x4)
-Stainless Steel M8x1.25 Mounting Bolts (x4)
20-0569-02 FUEL RAILS, TOP FEED CONVERSION, SUBARU EJ V3-6
VEHICLE COMPATIBILITY
97-00 Subaru Impreza WRX (JDM/EDM)
97-00 Subaru Impreza WRX STi (JDM)
98-01 Subaru Forester (JDM, EJ20G)
92-00 Subaru Legacy GT (JDM, EJ20G)
FUEL INJECTOR COMPATIBILITY
Do NOT purchase "WRX Fitment" injectors. See more information about injector fitment below.
Below are some of the many fuel injectors that are a direct fit:
Injector Dynamics ID1050-XDS-48-14-14
Injector Dynamics ID1300-XDS-48-14-14
Injector Dynamics ID1700-XDS-48-14-14
Injector Dynamics ID2600-XDS-48-14-14
OVERVIEW
For the 20-0569-02 conversion fuel rails, adaptable mounting brackets are included that permits a wide range of Subaru vehicles to be used. Each fuel rail features three 8AN ORB threaded ports (6 total). Press-fit spacers are included to thermally insulate intake manifold heat transfer.
INCLUDES
-Black Anodized Laser Etched Aluminum Fuel Rails (x2)
-Black Anodized Version 3-6 Conversion Fuel Rail Mount (x2)
-Black Anodized and Laser Etched 26mm Injector Seats (x4)
-Thermal Insulating Press-In Spacers (x4)
-Stainless Steel M8x1.25 Mounting Bolts (x4)
20-0577-02 FUEL RAILS, TOP FEED UPGRADE, SUBARU EJ, TOP PORT
VEHICLE COMPATIBILITY
01-06 Subaru Impreza WRX (JDM/EDM)
01-06 Subaru Impreza WRX STi (EDM)
01-02 Subaru Impreza WRX STi (JDM)
The vehicles below also require 20-0372
03-06 Subaru Impreza WRX STi (JDM)
04-11 Subaru Impreza (EJ253)
05-10 Subaru Forester (EJ253)
05-12 Subaru Legacy (EJ253)
06-09 Subaru Outback (EJ253)
FUEL INJECTOR COMPATIBILITY
This fuel rail is compatible with factory or OEM equivalent fuel injectors. The machined injector ports are designed for 11mm upper injector O-rings. If upgrading fuel injectors, consult your aftermarket injector supplier for details. Radium Engineering cannot specify any further injector dimensions other than stating ‘OEM equivalent’.
OVERVIEW
These fuel rails have the same mounting, injector spacing and fitment as the 20-0567-02 (above). However, each fuel rail has an 8AN ORB "top port", unlike 20-0567-02 which has a center lower port (picture below shown with Fuel Rail Adapter 20-0372).
The added clearance is necessary for the EJ207 and JDM EJ205 engines that have early AVCS solenoids with vertical connectors (shown below).
INCLUDED
-Black Anodized Laser Etched Aluminum Fuel Rails (x2)
-Thermal Insulating Press-In Spacers, 20mm (x4)
-Stainless Steel M8x1.25 Mounting Bolts (x4)
20-0579-02 FUEL RAILS, TOP FEED CONVERSION, SUBARU EJ V1-2
VEHICLE COMPATIBILITY
98-99 Subaru Legacy SUS (EJ25D)
96-97 Subaru Legacy LSi (EJ25D)
96-99 Subaru Legacy GT (EJ25D)
94-98 Subaru Legacy (JDM, EJ25D)
94-98 Subaru Grand Wagon (JDM, EJ25D)
94-98 Subaru Lancaster (JDM, EJ25D)
96-99 Subaru Outback (EJ25D)
92-96 Subaru Impreza WRX (EJ20G)
1998 Subaru Impreza 2.5RS (EJ25D)
1998 Subaru Forester (EJ25D)
FUEL INJECTOR COMPATIBILITY
Do NOT purchase "WRX Fitment" injectors. Read below regarding injector fitment information.
Below are some of the many fuel injectors that are a direct fit:
Injector Dynamics ID1050-XDS-34-14-14
Injector Dynamics ID1300-XDS-34-14-14
Injector Dynamics ID1700-XDS-34-14-14
Injector Dynamics ID2600-XDS-34-14-14
OVERVIEW
For the 20-0579-02 conversion fuel rails, mounting brackets are included that permit a wide range of Subaru vehicles to be used. Each fuel rail features three 8AN ORB threaded ports (6 total). Press-fit spacers are included to thermally insulate intake manifold heat transfer.
INCLUDES
-Black Anodized Laser Etched Aluminum Fuel Rails (x2)
-Black Anodized Version 1-2 Conversion Fuel Rail Mount (x2)
-Black Anodized and Laser Etched 26mm Injector Seats (x4)
-Thermal Insulating Press-In Spacers (x4)
-Stainless Steel M8x1.25 Mounting Bolts (x4)
20-0869-02 FUEL RAILS, TOP FEED UPGRADE, SUBARU EJ22/EJ251
VEHICLE COMPATIBILITY
*1999 Subaru Impreza 2.2L (CARB)
99-01 Subaru Impreza 2.2L (FED)
99-04 Subaru Impreza 2.5RS
99-04 Subaru Impreza 2.5TS
99-04 Subaru Impreza 2.5OBS
99-04 Subaru Forester
*1999 Subaru Legacy 2.2L (CARB)
1999 Subaru Legacy 2.2L (FED)
00-04 Subaru Legacy 2.5L
00-04 Subaru Outback
03-05 Subaru Baja
*Not compatible with OEM top feed injectors. The following is also required: 20-0816 (x4), 14-0720 (x4), Flat Head M8x1.25x60mm Screws (x4)
FUEL INJECTOR COMPATIBILITY
This fuel rail is compatible with the OEM air assist fuel injectors found on the EJ251 (shown below). However, it is not compatible with the OEM air assist fuel injectors found on the EJ22 as they use 11mm upper injector O-rings. The machined injector ports are designed for 14mm upper injector O-rings.
As shown below, the fuel rails are compatible with 48mm tall Bosch EV14 injectors.
Compatible aftermarket injectors (below) must have 14mm upper and lower O-rings.
Injector Dynamics 1050.48.14.14
Injector Dynamics 1300.48.14.14
Injector Dynamics 1700.48.14.14
Injector Dynamics 2600.48.14.14
To eliminate the Subaru air assist feature on the EJ251, the provided O-rings should be installed into the lower groove on the Bosch EV14 injectors.
To eliminate the Subaru air assist feature on the EJ22 (california spec only), 20-0816 (x4) injector seats are required as well as 14-0720 (x4) spacers, and flat head M8x1.25x60mm Screws (x4).
OVERVIEW
As shown below, thermal insulating spacers are provided to protect from heat transfer.
Each fuel rail has three 8AN ORB threaded ports (6 total). If the OEM fuel pressure regulator needs to be reused, 20-0303 can be used. Alternatively, Radium Engineering 20-0978 plumbing kit could be installed (shown below).
As shown above, a Radium Engineering 20-0776 fuel pulse damper can be installed into the center port.
INCLUDED
-Black Anodized Laser Etched Aluminum Fuel Rails (x2)
-Green Anodized Fuel Rail Mount (x2)
-Black Anodized and Laser Etched 26mm Injector Seats (x4)
-Thermal Insulating Press-In Spacers (x4)
-Rubber Mounting Spacer Stays (x4)
-FKM O-rings For Aftermarket Injectors (x4)
-Stainless Steel Fuel Rail Hardware (x4)
-Stainless Steel Mount Hardware (x4)
20-0372 Fuel Rail Adapter, Ver8/9 EJ207, 99-09 EJ253, and EJ259
Click here to download installation instructions (PDF)
COMPATIBILITY
SUBARU EJ207 (JDM Ver8/9 Manifold Only)
SUBARU EJ253 (Aluminum Manifold Only)
SUBARU EJ259 (All Versions)
The Subaru Impreza 2.5i (EJ253) and JDM Ver8/9 (EJ207) STi intake manifolds are great solutions for eliminating the tumble generator valves on modified engines.
The rare EJ259 (shown below) is found in the Legacy, Legacy GT, Outback, and Legacy Outback. It has a 3-piece manifold with tumble generator valves in the center section.
These Radium Engineering adapters permit the use of any OEM or aftermarket Subaru top feed fuel rail (such as Radium 20-0577) to be used.
The slotted hole positioning below is specifically for the Subaru EJ253 intake manifold. Moving the adapters outwards allows fuel rail fitment for the Ver 8/9 JDM EJ207 STi intake manifold.
Features
-CNC Machined Billet 6061 Aluminum
-Anodized and Laser Etched
-Stainless Steel Hardware
Fuel Rail Plumbing Kits for Subaru EJ Engines
For more information and installation instructions regarding the Subaru EJ Fuel Rail Plumbing Kits, go HERE.
