Radium Engineering

Radium Engineering 1993-95 Mazda RX7 FD (US) Fuel Hanger Surge Tank

  • Sale
  • $712.45
  • Regular price $749.95
  • 3 available

Product SKU: RAD 20-0950

The Radium Engineering fuel surge tank hanger permits the use of 1, 2, or 3 aftermarket high pressure pumps and 1 lift pump in the stock Mazda FD RX7 fuel tank. The unique integrated 1.85L surge tank completely eliminates fuel starvation. No grinding, bending, or modification of the trunk floor sheet metal is required.

Use part number 20-0950 for: 

  • Walbro GSS342
  • AEM 50-1200

Use part number 20-0951 for: 

  • Ti Automotive E5LM

Use part number 20-0952 for: 

  • Walbro F90000267
  • Walbro F90000274
  • Walbro F90000285

Note: Fuel pumps are not included. They are sold separately.

To simplify aftermarket -AN hose plumbing, the 10AN ORB threaded feed port features a low profile 8AN male fitting and the 8AN ORB threaded return port features a low profile 6AN male fitting. To reconnect the OEM feed and return hoses, barb fittings are also included.

The custom designed stainless electrical studs easily handle the high current demand that compact bulkhead connectors lack. These serviceable connections are properly sealed and impervious to all standard and exotic fuels. Nonconductive acorn nuts are provided to prevent any accidental short circuits. Furthermore, the high quality in-tank wiring is insulated with chemically resistant ETFE. Electrical hardware is included for the fuel pump(s), OEM level sender, and OEM temperature sensor.


  • Drop-In OEM Replacement
  • Permits 1-3 Surge Pumps plus 1 Lift Pump
  • -8AN Male Pump Outlet Fitting
  • -6AN Male Return Inlet Fitting
  • Fuel Starvation Protection
  • High Current Electrical Hardware
  • Compatible with Various Pumps
  • Anodized Aluminum Construction
  • Gasoline and Ethanol Compliant
  • Anodized Aluminum 8AN Male Fitting for Feed
  • Anodized Aluminum 6AN Male Fitting for Return
  • Anodized Aluminum 8.5mm Barb Hose Ends for OEM Feed/Return
  • Anodized Aluminum Surge Tank Canister
  • Anodized Aluminum OEM Fuel Sensor Mount
  • Anodized Aluminum Lift Pump Baffle and Check Ball
  • Fuel Resistant Submersible PTFE Tubing
  • Fuel Resistant ETFE Insulated Wiring
  • Stainless Electrical and Mounting Hardware
  • Stainless Steel Mesh Triple Pump Filter


  • 1993-1995 Mazda FD RX-7 (US)
  • 1992-2002 Mazda FD RX-7 (JDM)

Installation instructions available at www.radiumauto.com