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Radium Engineering Fuel Pump Hanger - Subaru

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Radium Engineering
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 Product Description

The Radium Engineering fuel pump hanger is a drop-in replacement for the following models:

2008-2014 Subaru Impreza
2008-2014 Subaru Forester
2005-2009 Subaru Legacy
2005-2009 Subaru Outback

that allows the use of 1 or 2 aftermarket pumps. The machined assembly mounts in the factory fuel tank using the OEM hold-down flange. Four -6AN male fittings (2 pump outlets, 1 return, 1 crossover) simplify aftermarket -AN hose plumbing. Electrical bulkhead connectors are included for the fuel pump, OEM level sensor, and OEM temperature sensor.

The kit includes Radium's own venturi jet pump with interchangeable orifices. Without a properly designed jet pump, fuel cannot be properly transferred from the passive side of the OEM saddle bag fuel tank to the active side where the pump(s) reside. When fuel pump flow is increased, the OEM jet pump becomes too restrictive creating unwanted backpressure in the FPR return line causing excessive fuel rail pressure.

The kit also includes an anodized aluminum collector box that sits at the bottom of the OEM fuel tank. This container is NOT a total solution to fuel starvation, but does improve the fuel supply around the pump inlet. There is a 1" check valve incorporated on the front side of the tank that serves as a trap door keeping the pump(s) supplied with fuel during aggressive driving. Furthermore, all returning fuel from the pressure regulator 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 slosh noise. The collector box also permits a mounting solution for the OEM fuel level and fuel temperature sensors. Also included are 2 mating connectors for the sensors making the kit easily serviceable.

Single pump applications can reuse the OEM fuel pump controller wiring, but it is recommended to upgrade the OEM wiring as high flow fuel pumps draw additional current requiring thicker gauge wire. Fuel pump wiring kits can be purchased HERE. Select qty1 for single pump applications and qty2 for dual pump applications.


  • Anodized Aluminum Laser Etched Plate
  • Anodized Aluminum Collector Box and Check Valve
  • Anodized Aluminum Venturi Jet Pump with Multiple Orifices
  • Anodized Aluminum 6AN Male Outlet Fittings
  • Anodized Aluminum Fuel Level and Temp Sensor Bracket
  • Anodized Aluminum Dual Pump Cradle
  • Bulkhead Fuel Pump and Sensor Harnesses
  • Fluorosilicone Duckbill Return Valve
  • Submersible Rubber Fuel Hose 
  • Stainless Steel Hardware and Clamps

Pump Configuration Selection:
This kit is available with or without fuel pumps included. If you are going to use your own pumps or source pumps elsewhere, select the option "Single / Dual Hanger, Pumps Not Included" from the drop down. Note that there will be enough components included with this option to use 1 or 2 fuel pumps. Depending on the setup, some parts will simply not be used. Next, select the type of pumps that will be used so the appropriate internal wiring connectors will be included in the kit. If pumps are needed, the kit will come preassembled and sock filters will be installed on all fuel pumps. Note that the pump wiring harness is always configured to use up to 2 pumps even if only 1 surge tank pump is selected.

The optional plumbing kits include fittings and hoses to make the fuel pump hanger a direct bolt-in OEM replacement for both single and dual pump configurations. The included hose/fittings allow a plug and play connection to the OEM fuel system. These kits do NOT require any extra fuel hose plumbing.


  • PTFE Crossover Hose Replacement
  • 3/8" SAE Quick Disconnect Adapter Fittings
  • 6AN Coupler Fittings


  • PTFE Crossover Hose Replacement
  • 3/8" SAE Quick Disconnect Adapter Fittings
  • 6AN Coupler Fittings
  • PTFE Fuel Feed Hose
  • 6AN Y-Adapter

Installation Instructions:
Click HERE to download installation instructions (PDF) if received before September 1, 2015.
Click Here to download installation instructions (PDF) if received after September 1, 2015.

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