Radium Engineering Subaru EJ parallel fuel rail plumbing kit for Subaru EJ engines. The kit is designed for a parallel fuel setup and is used to connect Radium fuel rails to the vehicle’s original feed and return lines in the engine bay.
The kit combines fuel hoses, fittings, adapters, fuel pressure regulator and pressure gauge in one solution. It is especially relevant when fitting Radium fuel rails, larger injectors, upgraded fuel pump, E85 conversion or other performance projects where the original fuel system is no longer sufficient.
A parallel setup means that each fuel rail receives fuel directly from the regulator. This gives a clean installation in the engine bay and a more flexible fuel setup for tuning, turbo and motorsport. The regulator is mounted at the left strut tower using the included stainless steel bracket.
The kit is supplied with Radium direct-mounted fuel pressure regulator, 0-100 psi pressure gauge, 3/8" high pressure EFI fuel hose, Pushlok hose ends, ORB plugs, T-fitting, SAE adapters, 8AN ORB to 6AN fittings and disconnect tool for SAE couplings.
The kit uses 3/8" high pressure EFI fuel hose, equivalent to 6AN size, and is suitable for alcohol-based fuels such as ethanol, methanol and E85.
Kit includes:
1 x Radium Multiport regulator
1 x stainless steel FPR bracket
1 x Radium 0-100 psi pressure gauge
1 x 3/8" EFI hose
1 x -6AN ORB plug
4 x -8AN ORB plug
2 x -6AN ORB to -6AN male fitting
1 x inline -6AN to 1/8" NPT T-fitting
5 x Pushlok hose end
1 x -6AN ORB to 10 millimetre hose barb
1 x -8AN ORB to 10 millimetre hose barb
2 x 5/16" SAE to 3/8" hose barb
4 x EFI hose clamp
2 x -8AN ORB to -6AN male swivel fitting
1 x 5/16" SAE disconnect tool
Stainless steel hardware
Fits:
Subaru Impreza STi 2008-2021
Models before 2008 are not listed as compatible due to clearance issues at the mounting location for the fuel pressure regulator in this kit.
