Radium Subaru Fuel Hanger For 2008-14 Subaru WRX, 08-21 STI, 08-14 FXT (Deatschwerks DW400) - Pumps Not Included - 20-0781-00

RADIUM SUBARU FUEL HANGER

PUMP COMPATIBILITY

This fuel pump hanger is compatible with 1 or 2 of the following fuel pumps:

• Deatschwerks DW400 (Pump kit includes filter)

IMPORTANT

14-18 Subaru Forester XT & 15-21 Subaru WRX require extra components

• 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.
• 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.

OVERVIEW

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 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.

Optional fuel hanger plumbing kits are available and include a filter, hose, fittings, hardware, etc. They add the necessary post pump filtration required when using the Radium Engineering fuel pump hanger.

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 that will 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.

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.

PLUMBING

• FUEL PUMP OUT: This port is thread tapped for 8AN ORB (3/4"-16). A SAE quick connect male adapter fitting is preinstalled for connecting to the OEM feed line.
• FPR RETURN: This port is thread tapped for 6AN ORB (9/16"-18). A SAE quick connect male adapter fitting is preinstalled for connecting to the OEM return line.
• CROSSOVER: This port is thread tapped for 6AN ORB (9/16"-18). A SAE quick connect male adapter fitting is preinstalled for connecting to the OEM crossover line.

An external fuel hanger plumbing kit is no longer required if the factory fuel lines are reused. Each fuel pump merges internally into a single port. External fuel line merging is no longer required.

Note: because the post pump filter normally located inside the OEM fuel pump hanger, an external post pump fuel filter is still required.