Radium Engineering Fuel Cell Surge Tank - FCST | Universal Fitment (20-099X-0X)

Radium Engineering
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$883.45 $1,079.95Instant Savings of 18% ($196.50)

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FCST Fuel Cell Surge Tank - Universal Fitment by Radium Engineering

Since 2010, external Radium Engineering fuel surge tanks have been an excellent way to eliminate fuel starvation that occurs in racing. To simplify plumbing and packaging, in 2013 Radium Engineering introduced the first to market Fuel Cell Surge Tank (FCST) to the competition vehicle market. It quickly became the preferred fuel system for professional racing. In 2023, the FCST-X was released

The Fuel Cell Surge Tank is a drop-in fuel pump system for Radium Engineering's popular fuel cells or any cell that uses the industry standard 6x10 24-bolt fill plate bolt pattern. The FCST is designed to protect EFI vehicles that experience fuel starvation. It is NOT a glorified trap door box with baffles. It features a true dual-chamber fuel tank utilizing a single lift pump and up to 3 surge tank pumps all packaged inside the fuel cell. It provides all the benefits of a traditional external fuel surge tank without safety concerns and plumbing complexity.

A lift pump scavenges fuel from the bottom of the fuel cell and pumps it into the 2L surge tank. Inside the surge tank canister, up to 3 EFI fuel pumps can be used to feed high pressure fuel to the engine. If the lift pump starves, the volume inside the surge tank canister will keep the surge tank pumps fed and the engine supplied with fuel. The return from the fuel pressure regulator is also routed to the surge tank canister to help keep it full.


  • Merged single 10AN ORB female threaded outlet.
  • Multiple fuel pump options including gerotor, turbine, and brushless DC motor pumps
  • One-way fill valves located on the bottom of the canister allows fuel in, but not out, keeping the surge tank full


  • Fuel compatibility: leaded and unleaded gasoline, methanol, ethanol, E85, etc
  • Rollover vent valve protection.
  • Simplified servicing eliminates sealing washers and fuel cell retaining brackets


  • Universal

Fitment Instructions:

  • The cell must have the industry standard 6"x10", 24-bolt flange opening.
  • The opening must be on the top face of the fuel cell (i.e. not a side face).
  • The cell depth must be at least 7.7" (196mm) measured from the outer top face to the internal bottom face.

What's In The Box?

  • 1 - 8AN roll over vent valve
  • 1 - 6x10 24-hole FKM gasket
  • 1 - 6AN male return fitting
  • 1 - 8AN male pump out fitting
  • 1 - Fuel level sensor block-off plate
  • 1 - Fuel level switch block-off plug
  • 3 - FKM 1-way fill valves
  • Stainless steel mounting hardware
  • Insulated anodized aluminum acorn nuts
  • Electrical power wire ring terminals



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