Radium Engineering Multi-Pump Fuel Surge Tank MPFST

Radium Multi-Pump Fuel Surge Tank MPFST

Application: Universal – external fuel surge tank for vehicles with poorly baffled fuel tanks
Part Type: Multi-pump fuel surge tank (MPFST) – fuel pumps not included
Part Number: 20-1440, 20-1441, 20-1442, 20-0443-00

A fuel surge tank prevents fuel starvation in vehicles with poor tank baffling. A lift pump – usually the OEM in-tank pump – fills the surge tank, the stored fuel buffers the MPFST pump(s), and excess fuel returns to the main tank. It lets you upgrade a stock fuel system without opening the stock tank, making it well suited to big power upgrades such as forced induction.

The 2024 redesign supports multiple high-flow pumps. Their outlets merge into a single outlet, and because the pumps have check valves they can be staged. Fuel enters the supply and return ports tangentially, swirling to reduce air bubbles and foaming.

Key Features

• Multi-Pump: Up to 3 pumps (1 or 2 for the E5LM version), merged into one outlet
• Pump Staging: Pumps with internal check valves can be staged
• Anti-Foam Entry: Tangential supply and return entry swirls fuel to reduce air bubbles and foam
• Chambered Pre-Filter: Three independent filtration chambers – fuel cannot pass between them
• Swappable Fittings: Preinstalled 8AN and 6AN male adapters can be changed to other sizes
• Level Switch Port: Ready for the optional 20-0461 fuel level switch
• High-Current Electrical: Anti-rotation high-current electrical studs
• Fuel Compatibility: Internal wiring is petrol, ethanol and methanol compliant

Available Configurations

• 20-1440: Walbro GSS342, AEM 50-1200, DeatschWerks DW440 – up to 3 pumps
• 20-1441: DeatschWerks DW400, Bosch BR540 – up to 3 pumps (BR540 has no check valve so can't be staged; 3 pumps won't fit with the optional level switch)
• 20-1442: Walbro F90000267, F90000274, F90000285, F90000295; DeatschWerks DW810, Fuelab 49614, Protec 11928 (brushless) – up to 3 pumps (F90000295 can't be staged; brushless pumps need the 13-1187 base)
• 20-0443-00: Ti Automotive E5LM (BKS1001) or Injector Dynamics BPC100 – 1 or 2 pumps, brushless controller required, check valve adapters included

What's Included

• Surge tank
• Anodised aluminium pump mounting bracket
• Stainless mesh pump inlet screen (press-in filter sock on 20-0443-00)
• Anti-rotation high-current electrical studs
• Ring terminals and hardware
• Preinstalled fittings – 8AN male on the pump outlet, 6AN male on the supply, return and overflow ports
• Check valve adapters (20-0443-00 only)

Optional Parts

• Radium Fuel Level Switch, 1/8" NPT (20-0461) – signals when fuel in the surge tank drops by 20% or more
• Radium Engineering Fuel Pump Filter Base Adapter – 12mm Brushless Pumps (13-1187) – required for brushless DW810, Fuelab 49614 and Protec 11928 pumps in the 20-1442

Important Notes

• Fuel pumps are not included
• Plumb exactly as specified: stock tank pump outlet to the MPFST supply port, stock tank return to the overflow port, MPFST pump outlet to the engine/fuel rail, and MPFST return port to the regulator's return port
• On returnless vehicles, don't block the overflow port – create a return port on the stock tank instead (see Radium's returnless instructions)
• Unused pump ports on the inlet screen don't need to be blocked off
• The E5LM version (20-0443-00) requires a brushless pump controller
• Installation instructions are available in the Instructions tab

Vehicle Fitment

• Universal – see Application

If you're unsure whether this will fit your vehicle, contact our team of experts via email at hello@iilumolab.com and send through a few photos of the car for us to verify fitment.

Installation

We always recommend professional fitment for guaranteed satisfaction. If you're wanting a hassle-free installation, feel free to contact our friendly team as we offer installation services in-store at our Melbourne workshop. For more details, contact us here.

Note

Upon receiving the item, please ensure that the part is indeed the correct item you have ordered. This can be achieved by checking labels on the packaging. Please also ensure a proper test fit of the item is conducted prior to paint and/or installation. Returns/Warranty claims will be voided if the item has been tampered with, or is no longer in resalable/new condition.