The duckbill valve prevents back flow and reduces fuel spray noise.Īs described below, there are 3 external ports: 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.įurthermore, 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 included a venturi jet pump features an integrated PRV (pressure relief valve). Each fill valve flows 355LPH (710LPH total). Furthermore, there are two 1-way fill valves on the collector box thats allow fuel in but not out. To help prevent starvation, the anodized aluminum collector box keeps fuel trapped around the pumps. No permanent modifications are required making installation simple. The machined assembly mounts in the factory fuel tank using the OEM gasket and replaces the OEM hold-down flange. The system is safe to use with alternative fuels such as E85. The Radium fuel pump hanger for late model Subaru vehicles replaces the OEM unit and allows the use of 1 or 2 high-flow aftermarket fuel pumps. The fuel pressure regulator that is normally inside the OEM fuel unit is discarded. To adapt the OEM fuel level sensor to the Radium fuel pump hanger, 20-0850 FUEL LEVEL SENDER ADAPTER, FA20 is required.Ģ.

The OEM fuel tanks may be the same, but the OEM fuel units are completely different. The 2 vehicles listed above require extra components described below.ġ.

Radium fuel pressure regulator sti