



Radium Top Feed Upgrade Fuel Rails w/Top FPD Port - Subaru WRX/STI/Forester
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Description
Radium Top Feed Upgrade Fuel Rails w/Top FPD Port - Subaru WRX/STI/Forester
Application: Subaru EJ with OEM top feed injectors where early AVCS solenoid clearance is required (EJ207, JDM EJ205) and EJ253 models (see Vehicle Fitment)
Part Type: Top feed upgrade fuel rails (top port)
Part Number: 20-0577-02
Radium Engineering top feed upgrade rails fit Subaru EJ intake manifolds that already use top feed injectors, and retain the OEM or OEM-equivalent injectors. This version features a top port design that provides clearance for the early AVCS solenoid used on the EJ207 and JDM EJ205.
Each rail is machined from 6061 aluminium, black anodised and laser etched, and uses thermal insulating press-in spacers to help insulate the rails from intake manifold heat. The ports are tapped for 8AN ORB fittings, giving flexibility to plumb the regulator, pulse damper and gauge to suit your fuel system.
Key Features
- Top Feed Upgrade: Retains OEM or OEM-equivalent top feed injectors
- Top Port Design: Clears the early AVCS solenoid on EJ207 and JDM EJ205
- Billet Construction: 6061 aluminium, black anodised and laser etched
- 8AN ORB Ports: Flexible fuel system plumbing
- Thermal Spacers: 20mm insulating press-in spacers
- Stainless Hardware: Stainless steel mounting hardware
What's Included
- Aluminium fuel rails
- 20mm thermal insulating press-in spacers
- Stainless steel hardware
Optional Parts
- Radium Fuel Rail Adapter - Subaru Ver8/9 EJ207, 2.5i EJ253 (20-0372) – adapter brackets required for 2003-2006 WRX STI (JDM) and EJ253 applications
Important Notes
- This is an upgrade rail – OEM or OEM-equivalent injectors must be used (same height and matching upper and lower O-ring diameters and styles)
- Fuel injectors are not included
- Radium does not make injector recommendations – consult your tuner for brand and flow rate
- 8AN ORB fittings are sold separately and must be selected to suit your application
- Allow ample space around the ports for regulators, gauges and pulse dampers – check clearance using Radium's dimensional drawings
- 2003-2006 WRX STI (JDM) and EJ253 Impreza, Forester, Legacy and Outback applications require the Radium 20-0372 adapter brackets
- Installation instructions are available in the Instructions tab
Vehicle Fitment
- Subaru Impreza WRX (JDM/EDM) 2001-2006
- Subaru Impreza WRX STI (EDM) 2001-2006
- Subaru Impreza WRX STI (JDM) 2001-2002
- Subaru Impreza WRX STI (JDM) 2003-2006 – requires 20-0372
- Subaru Impreza (EJ253) 2004-2011 – requires 20-0372
- Subaru Forester (EJ253) 2005-2010 – requires 20-0372
- Subaru Legacy (EJ253) 2005-2012 – requires 20-0372
- Subaru Outback (EJ253) 2006-2009 – requires 20-0372
Not sure if this suits your vehicle? Email sales@coore.com.au and our team will confirm fitment.

