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Click here to download installation instructions (PDF)

Download discontinued 20-0168-02 and 20-0335-02 fuel rail instructions (PDF)


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.
Fuel Pressure Gauge Adapters can be found HERE.

Want a complete engine bay plumbing kit that includes a 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.

Scroll to the bottom of this page to see details about the 20-0478 Fuel Rail Plumbing Kit.

Reference the chart below to be sure the proper fuel rails are ordered.

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. Machined press-fit phenolic spacers are included to insulate intake manifold heat transfer.

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.


For the 20-0568-02 conversion fuel rails, 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 ID850-34-14-14
Injector Dynamics ID1050x-34-14-14
Injector Dynamics ID1300-34-14-14
Injector Dynamics ID1700-34-14-14
Injector Dynamics ID2000-34-14-14 
Evolved Injection DPI550-38-14-14
Evolved Injection DPI650-38-14-14
Evolved Injection DPI850-38-14-14
Evolved Injection DPI1000-38-14-14
Evolved Injection DPI1200-38-14-14
Evolved Injection DPI1300-38-14-14
Evolved Injection DPI2200-38-14-14
RC Engineering SM2-0310
RC Engineering SM2-0370
RC Engineering SM2-0450
Deatschwerks 16U-00-0042-4
Deatschwerks 16U-00-0050-4
Deatschwerks 16U-00-0065-4
Deatschwerks 16U-00-0090-4
Deatschwerks 16M-00-1500-4
Deatschwerks 16M-00-2200-4

20-0568-02 KIT INCLUDES:

-Black Anodized Laser Etched Aluminum Fuel Rails (x2)
-Green Anodized and Laser Etched 22mm Injector Seats (x4)
-Phenolic Thermal Insulating Press-In Spacers, 15mm (x4)
-Phenolic Thermal Insulating Press-In Bolt Washers (x4)
-Stainless Steel M8x1.25 Mounting Bolts (x4)

For the 20-0569-02 conversion fuel rails, adaptable mounting brackets are included that permits a wide range of Subaru vehicles to be used.

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 ID725-48-14-14
Injector Dynamics ID850-48-14-14
Injector Dynamics ID1000-48-14-14
Injector Dynamics ID1050x-48-14-14
Injector Dynamics ID1300-48-14-14
Injector Dynamics ID1700-48-14-14
Injector Dynamics ID2000-48-14-14 
Evolved Injection EI550-48-14-14
Evolved Injection EI650-48-14-14
Evolved Injection EI850-48-14-14
Evolved Injection EI1000-48-14-14
Evolved Injection EI1200-48-14-14
Evolved Injection EI1300-48-14-14
Evolved Injection EI2200-48-14-14
Deatschwerks 17U-00-0050-4
Deatschwerks 17U-00-0060-4
Deatschwerks 17U-00-0072-4
Deatschwerks 17U-00-0095-4 
Deatschwerks 16S-12-2200-4 

20-0569-02 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)
-Phenolic Thermal Insulating Press-In Spacers (x4)
-Phenolic Thermal Insulating Press-In Bolt Washers (x4)
-Stainless Steel M8x1.25 Mounting Bolts (x4)

Subaru Fuel Rail Plumbing Kit for EJ Engines
For more information and installation instructions regarding the Subaru EJ Fuel Rail Plumbing Kits, go HERE


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