Radium Fuel Pump Hanger (08-21 WRX/STI, 05-09 LGT/OBXT, 08-14 FOR)

The Radium fuel pump hanger for late model Subaru vehicles replaces the OEM unit and allows the use of a high-flow aftermarket fuel pumps. The system is safe to use with alternative fuels such as E85. The machined assembly mounts in the factory fuel tank using the OEM gasket and replaces the OEM hold-down flange. No permanent modifications are required making installation simple.

PREVENTING STARVATION
To help prevent starvation, the anodized aluminum collector box keeps fuel trapped around the pumps. Furthermore, there are two 1-way fill valves on the collector box thats allow fuel in but not out. Each fill valve flows 355LPH (710LPH total).

The included a venturi jet pump features an integrated PRV (pressure relief valve). This transfers fuel from the passive side of the OEM fuel tank to the active side where the pump(s) reside. This unique design creates suction without restricting the return line.

Furthermore, all returning fuel from the FPR return and the crossover hose enter the collector box through a one-way duckbill valve keeping it full. The duckbill valve prevents back flow and reduces fuel spray noise. 

ELECTRICAL
Single pump applications can reuse the OEM fuel pump controller wiring, as shown below. However, it is recommended to upgrade the OEM wiring to get the maximum potential out of these high current, high flow pumps.

Unlike compact multi-pin electrical connectors, these custom designed stainless steel electrical studs easily handle the high current demand from aftermarket fuel pumps. These serviceable connections are hermetically sealed and impervious to all standard and exotic fuels. The low profile design keeps all wiring tucked nicely underneath the OEM access cover. Each pump has it's own dedicated +/- electrical connections. Nonconductive anodized acorn nuts are provided to prevent any accidental short circuits. All necessary electrical hardware is provided for external wiring connections.

The factory fuel temperature and level sensors are re-used. The collector box permits mounting for level as shown above. The internal pump bracket permits mounting for the temperature sensor. Consult the installation instructions link at the top of this page for more details. 

[ NOTE ] 15-21 Subaru WRX, 14-18 Subaru Forester XT

1. The OEM fuel tanks may be the same, but the OEM fuel units are completely different. To adapt the OEM fuel level sensor to the Radium fuel pump hanger, 20-0850 FUEL LEVEL SENDER ADAPTER, FA20 is required.

2. The OEM fuel system is returnless. The fuel pressure regulator that is normally inside the OEM fuel unit is discarded. An aftermarket FPR is required.

These kits are compatible with 1 or 2 fuel pumps. They are suited, but not limited, to the following:

20-0782-00

• Walbro F90000267
• Walbro F90000274
• Walbro F90000285
• ++Walbro F90000295

20-0780-00

• Walbro GSS342 255lph
• AEM 50-1200
• +AEM 50-1230
• +AEM 50-1235

20-0781-00

• Deatschwerks DW400

+These pumps do NOT feature a check valve. If this is required, purchase 20-1533. 
++These pumps do NOT feature a check valve. If this is required, purchase 20-1534.