Radium Engineering Fuel Pump Hanger for use w/ Walbro and AEM Pumps 1993-2007 Impreza / 2002-2007 WRX / 2004-2007 STI / 1997-2008 Forester / 1989-1999 Legacy / 1994-1999 Outback

 The Radium Engineering Fuel Pump Hanger is engineered to allow the use of one or two high-flow aftermarket fuel pumps while retaining OEM functionality. The precision-machined assembly installs directly into the factory fuel tank using the OEM gasket and hardware, keeping the fuel level sender and temperature sensors intact.

Fuel from both pumps merges into a single 8AN ORB outlet port, while the crossover and return ports utilize 6AN ORB threads. For easy installation, the kit includes OEM hose adapter fittings compatible with various model years — including SAE quick disconnect fittings for feed and return lines, as well as -6AN male adapters for aftermarket hose setups.

The hanger features custom stainless electrical studs designed to handle high current loads and resist all fuel types. The low-profile wiring design keeps all connections neatly tucked under the OEM cover plate. Nonconductive acorn nuts prevent short circuits, and the provided ETFE-insulated wiring ensures chemical resistance and durability.

An integrated venturi jet pump with pressure relief valve optimizes fuel transfer for high-flow systems. The included collector box has been redesigned for improved performance across all Subaru fuel tank variations. A 1-way fill valve provides a steady 355LPH flow, keeping the pump(s) constantly supplied during spirited driving. Returned fuel is redirected into the collector box to maintain consistent fuel delivery.

For single pump setups, the OEM fuel pump controller can be reused, though upgraded wiring is recommended for higher current demands.

Features:

• Supports one or two high-flow fuel pumps
• Direct bolt-in installation using OEM gasket and hardware
• Retains OEM fuel level and temperature sensors
• 8AN ORB outlet, 6AN ORB return and crossover ports
• Includes SAE quick connect and -6AN fittings
• ETFE-insulated wiring and stainless electrical studs
• Integrated venturi jet pump and pressure relief valve
• Optimized collector box for all WRX/STi fuel tanks
• Designed for reliability under high-performance conditions

Pump Compatibility:

• Walbro GSS342
• AEM 50-1200
• AEM 50-1230⁽¹⁾
• AEM 50-1235⁽¹⁾

^{Note: (1)}These pumps do NOT feature a check valve. If this is required, purchase 20-1533.

Fitment:

• 1993-2007 Subaru Impreza (including WRX & STi)
• 1997-2008 Subaru Forester (All)
• 1989-1999 Subaru Legacy (All)
• 1994-1999 Subaru Outback (All)
• 2005-2006 Saab 9-2X

Note: NOT compatible with JDM WRX STi SPEC C

Installation Instructions