Radium Engineering Series Fuel Rail Plumbing Kit 2002-2014 WRX / 2004-2021 STI

Radium Engineering plumbing kits are designed to complement Radium Engineering Subaru EJ fuel rail installations. These kits interface with the factory feed and return hard lines in the engine bay (near the LH strut tower) and provide all the underhood fuel plumbing. All necessary fittings and hoses are included, along with an adjustable high-flow fuel pressure regulator.

This fuel rail plumbing kit interfaces with the factory hard lines near the LH strut tower using SAE quick connects or older hose barb connections. A DMR-RA regulator (shown below) and a 0-100psi fuel pressure gauge are included. 

The fuel pressure gauge can be installed at any of the 6AN junctions before the regulator using the included adapter. The 6AN swivel fuel rail fittings are low profile making them ideal for the tight spaces associated with the EJ motor. The variety of reuseable PushLok hose ends permit customizing (such as adding a flex fuel sensor) making installation quick and painless. 

Notes:

• This kit does not include a fuel Filter
• Not compatible with Radium dual port injector fuel rail kit 20-0499.
• Safe to use with alcohol fuels such as methanol, ethanol, E85 etc.
  
• Utilizes 3/8" (6AN) high pressure EFI fuel hose.
  
• Includes 8AN ORB plugs for the fuel rails. Use these plugs if fuel pulse dampers are not being used.

Installation Instructions