Radium Engineering Top Feed Conversion Fuel Rails
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Radium Engineering Top Feed Conversion Fuel Rails - Subaru WRX / STI (EJ20 / EJ25)
Radium Engineering's 20-0568-02 top feed conversion fuel rails replace the OEM side-feed rails on selected Subaru EJ engines, allowing the use of high-flow universal top-feed injectors. The rails are CNC machined from solid 6061 aluminium, black anodised and laser engraved, with a large internal bore to support high power and compatibility with all fuels including E85.
Video
RADIUM FUEL RAILS | SUBARU | TOP FEED CONVERSION SETUP
Each rail has three 8AN ORB ports (six in total) for flexible plumbing. Four anodised billet injector seats provide a sealed receptacle for injectors with 14mm lower O-rings, and press-fit spacers insulate the rails from intake manifold heat. Supplier fitment covers the 2004–2006 WRX STI (US spec), 2004–2005 Forester XT, 2004–2006 Liberty/Legacy GT and 2005–2006 Outback XT side-feed manifolds.
Note: Fuel injectors are not included. Use top-feed injectors with a 34mm body and 14mm upper and lower O-rings (e.g. Injector Dynamics ID1050/ID1300/ID1700/ID2600-XDS-34-14-14) – do not use 'WRX fitment' injectors. Match your intake manifold to the correct Radium rail part number before ordering. Installation by a professional is recommended.
Features
- Converts OEM side-feed to top-feed injectors
- CNC machined 6061 aluminium, black anodised, laser engraved
- 3x 8AN ORB ports per rail (6 total)
- 14mm ID injector bores with 4 anodised billet injector seats
- Press-fit thermal spacers included
- Compatible with all fuel types including E85
Pairs Well With
- Radium Engineering Fuel Rail Plumbing Kit (Parallel) - Subaru WRX / STI (EJ20 / EJ25)
- Radium Engineering Fuel Rail Plumbing Kit (Series) - Subaru WRX / STI (EJ20 / EJ25)
- Radium Engineering Fuel Pump Hanger - Subaru WRX / STI (GC / GD)
- Radium Engineering Intake Manifold Gasket - Subaru WRX / STI (EJ20 / EJ25)
- Radium Engineering MPR Multi-Port Regulator - Universal
Need help confirming fitment? Contact our team at sales@chicaneaustralia.com.au.
Vehicle Compatibility
| Make | Model | Chassis | Years | Engine / Notes |
|---|---|---|---|---|
| Subaru | WRX STI | GD | 2004–2006 | EJ257 (US-spec listed by supplier) |
| Subaru | Forester XT | SG | 2004–2005 | EJ255 |
| Subaru | Liberty / Legacy GT | BL / BP | 2004–2006 | EJ20 (JDM) / EJ255 |
| Subaru | Outback XT | BP | 2005–2006 | EJ255 |
Product
- Brand
- Radium Engineering
- Part number(s)
- 20-0568-02
Details
- Material
- CNC machined 6061 aluminium, black anodised, laser engraved
- Ports
- 3x 8AN ORB per rail (6 total)
- Injector bores
- 14mm ID
- Injector requirement
- Top feed, 34mm body, 14mm upper/lower O-rings
- Thermal insulation
- Press-fit spacers included
- Fuel compatibility
- All fuel types including E85
Contents
Black anodised, laser-etched aluminium fuel rails (x2)
Green anodised and laser-etched 22mm injector seats (x4)
Thermal insulating press-in spacers, 15mm (x4)
Stainless steel M8x1.25 mounting bolts (x4)
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