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.
![](https://www.radiumauto.com/Assets/ProductImages/14-0372_Installed-3.jpg?ts=125600)
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.
![](https://www.radiumauto.com/Assets/ProductImages/EJ259_Install.jpg)
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.
![](http://www.radiumauto.com/Assets/ProductImages/20-0479-02_20-0372_Fittings.jpg)
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.
![](https://www.radiumauto.com/Assets/ProductImages/14-0372_Installed-2.jpg?ts=125630)
Features
-CNC Machined Billet 6061 Aluminum
-Anodized and Laser Etched
-Stainless Steel Hardware