Radium Multi-Pump Fuel Surge Tank – MPFST | Universal (20-144X)

Multi-Pump Fuel Surge Tank (MPFST) by Radium Engineering

A fuel surge tank (FST) is designed to prevent fuel starvation to the engine on vehicles with inadequate fuel tank baffling. Fuel is supplied to the surge tank by a lift pump, which in most cases is the OEM in-tank fuel pump. The volume of fuel inside the surge tank acts as a buffer to always keep the FST pump(s) supplied with fuel, even if the lift pump starves momentarily.

This volume is maintained by the lift pump as well as the fuel returning from the fuel pressure regulator. Excess fuel in the surge tank is returned back to the vehicle’s main fuel tank. The surge tank also provides a quick and easy way to upgrade any standard fuel system without opening the stock fuel tank. This is an excellent fueling solution for vehicles installing large demand power upgrades such as forced induction.

When fuel enters the MPFST through the “SUPPLY” and “RETURN” ports, it gets redirected and runs tangential through the canister creating a swirl pot. This helps eliminate unwanted air bubbles and fuel foam that can affect fuel pump and engine performance.

The pumps are mounted using an anodized aluminum bracket. All internal wires are gasoline, ethanol, and methanol compliant. Filter socks have been replaced with a stainless steel mesh inlet screen. The pump power connections are handled with specially designed high-current electrical studs.

The underside of the MPFST is suitable for uneven surfaces commonly found in the trunk of a vehicle. Necessary ring terminals and hardware are included with every surge tank. Stainless steel M6x1.0mm socket head bolts are included for custom mounting.

Please Note:Fuel pumps are not included.

Features

• Up to 3 Bosch style high flowing fuel pumps can be used in this surge tank
• “PUMP OUT” port is 10AN ORB threaded but comes preinstalled with a -8AN male adapter fitting
• “OVERFLOW”, “SUPPLY”, and “RETURN” ports are 8AN ORB threaded but come preinstalled with -6AN male adapter fittings
• pumps are mounted using an anodized aluminum bracket
• Filter socks have been replaced with a stainless steel mesh inlet screen
• Pump power connections are handled with specially designed high-current electrical studs

Benefits

• All internal wires are gasoline, ethanol, and methanol compliant
• The underside is suitable for uneven surfaces commonly found in the trunk of a vehicle
• Merges all pumps into a single outlet simplifying external plumbing

Applications

• Universal

What’s In The Box?

• 1 – Radium MPFST
• Mounting Brackets
• Necessary Fittings and Hardware

References

• Installation Instructions
• Mounting Dimensions

Warranty

• RADIUM DOES NOT OFFER A WARRANTY ON ANY FUEL PUMPS