Radium Engineering Fuel Rails, Top Feed Upgrade – Subaru Phase-I EZ30

Designed for the early Subaru EZ30 “Phase-I” flat-6 engine, these Radium Engineering fuel rails provide a high-performance solution for factory or upgraded injectors. The OEM injectors feature 11 mm bores with Subaru’s unique air-assist system, which these rails fully support. To run universal top feed injectors, Radium includes custom seats to adapt the ports for aftermarket use.

Each rail features three 8AN ORB threaded ports for flexible plumbing and compatibility with fuel system accessories. These fuel rails are ideal for custom builds and fuel system upgrades using E85 or other performance fuels.

Fuel Injector Compatibility:

• OEM Injectors: Direct fit using 11 mm upper O-ring sizing. Fully compatible with factory air-assist setup.

• Aftermarket Injectors: Requires included Radium air-assist injector seats. Use 48 mm length injectors with 11 mm upper and 14 mm lower O-rings.

Verified Compatible Injectors:

• ID1050-XDS-48-11-14

• ID1300-XDS-48-11-14

• ID1700-XDS-48-11-14

• ID2600-XDS-48-11-14

Vehicle Compatibility:

• 00–04 Subaru Outback H6

• 00–03 Subaru Lancaster 6

• 02–03 Subaru Legacy GT30

• 02–03 Subaru Legacy RS30

• 2002 Subaru Blitzen 6 Wagon