Description
The Radium Engineering Top-Feed Fuel Rail for 2002–2014 Subaru WRX/STI is intended for performance builds that demand a more deliberate approach than simply adapting the factory hardware. It gives the installer a Radium-specific foundation for the listed application.
Why This Upgrade Matters
Fuel rails become a packaging and flow foundation once an engine moves beyond the limitations of the original fuel system. The goal is not simply a larger rail: the rail must provide the injector interface, port layout and plumbing flexibility needed to build a serviceable, stable fuel system around the engine.
Product-Specific Details
Machined aluminum fuel rails for use on Subaru EJ engines that use top feed injectors from the factory. Each rail has three 8AN ORB ports. For a selection of adapter fittings and plumbing kits, please see other Subaru related products at www.radiumauto.com.
Fitment & Application
Application: 2002–2014 Subaru WRX/STI
Fitment style: Application-Specific
Technical Notes
Radium performance rails commonly use anodized aluminum construction and ORB-style end ports to support configurable AN plumbing. Injector dimensions and sealing style remain application-dependent, so injector selection should be confirmed with the injector manufacturer or tuner.
Radium Part Number
RAD20-0567-02
Enthusiast Notes
For higher-power or track-focused builds, the real advantage is the freedom to design the rail, regulator, sensor and plumbing layout around the engine instead of being locked into the factory fuel hardware.
Before Ordering
Confirm engine/application, injector dimensions, required adapters, regulator strategy and whether a separate plumbing kit is needed. Fuel injectors and AN adapter fittings are not assumed to be included unless specifically listed for the selected SKU.