Surge Tank (SPR400V2) Single, Twin & Triple Fuel Pump

Product Code: SPR400V2

$USD 986.19

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SPR400 V2 Surge Tank Special Features

Single Fuel Pump Port

  • 8AN fuel fuel ports
  • Perfect fuel pressure control

  • Staged fuel pump operation

  • Superior fuel pressure stability due to our design protected 3-to-1 fuel pump manifold

Plug & Play
  • The SRP400 V2 features the Aftermarket Industries 6 way (30A per pin) Plug & Play electrical connector to allow independent control of up to three fuel pumps.

Bio-Fuel Compatible

  • Zero fuel vapour loss
  • Zero fuel smell GUARANTEED due to anodising process
  • Unleaded, Ethanol, C16
  • 2.5 Litres or 0.66 Gallons


  • Precision machined from aerospace grade 6061-T6 billet aluminium, designed using best practice engineering principles and stress tested to ensure maximum safety for all motorsport applications

  • Plug & Play 6 way (30 amp per pin) electrical connector - independently stage fuel pump operation for 1-3 fuel pumps.

Compatible Fuel Pumps

  • Walbro 255
  • Walbro 460
  • Walbro 520 / 525
  • Bosch BR540 (RECOMMENDED)

Wiring Guidelines: Required For WARRANTY

Fuel Pump Qty Main Power Wire

Fuel Pump Power Wire

Relay Wire Size

Relay Size Fuel Pump Circuit Breaker
Single Pump 10 AWG Tefzel Mil-Spec 22759/34 10 AWG Tefzel Mil-Spec 22759/34 16 AWG Tefzel Mil-Spec 22759/16 40A to 50A

30A Circuit Breaker or Fuse

Twin Pump 4 AWG (75A) Main Wire Tefzel Mil-Spec 22759/16 (60A Type 1 Circuit Breaker) 10 AWG Tefzel Mil-Spec 22759/34 16 AWG Tefzel Mil-Spec 22759/16 50A 30A Circuit Breaker or Fuse
Triple Pump 2 AWG (90A) Main Wire Tefzel Mil-Spec 22759/16 (80A Type 1 Circuit Breaker) 10 AWG Tefzel Mil-Spec 22759/34 16 AWG Tefzel Mil-Spec 22759/16 50A 30A Circuit Breaker or Fuse
  • Electrical Wire & Circuit Size Formula
    • Circuit Breaker/Fuse Size: 125% (1.25x) total Peak Current (Amps)
      • ​Circuit Breaker/Fuse must NOT exceed wire current rating
    • Wire Size: 150% (1.5x) total Peak Current (Amps)
    • Relay Size: 225% (2.25x) total Peak Current (Amps)

*Fuel Pumps are NOT included in this package: If you wish to add a fuel pump to your order please add the pump type and the quantity you require to your order from the AVAILABLE OPTIONS above - "Walbro Fuel Pump" or "Bosch Fuel Pump".

SPR400 V2 Surge Tank Power Support Guidelines
Fuel Pump Power HP


Power HP

(Unleaded & C16)

Base Fuel Pressure*


Peak Fuel Pressure**




1x Walbro 460 500 600 40* 70 13.5v
1x Bosch B540 650 700 40* 70 13.5v
2x Walbro 460 850 1000 40* 75 13.5v
2x Bosch BR540 1100 1200 40* 75 13.5v
3x Walbro 460 1400 1500 40* 80 13.5v
3x Bosch BR540 1500 1600 40* 80 13.5v


(Recommended Fuel Injector: Bosch Motorsport 1650cc)

**Maximum Peak Fuel Pressure (Base Pressure + Boost Pressure)

***Maximum Voltage

Rotary Engine: Reduce Horsepower HP Support Figures by 30%


Add a Fuel Bulkhead Fitting: A major issue with any aftermarket fuel system is a pressurised overflow from the surge tank back to the OEM fuel tank. A common mistake is the use of adapters; the OEM return in ALL instances is far too small and MUST be modified to ensure the fuel flows freely from the surge tank back into the OEM fuel pump module. We've now developed a super flow profile -8AN fuel bulkhead fitting to address any potential issues. Simply cut a small 20mm hole in the OEM module and secure the bulkhead fitting.

Fuel Bulkhead Fitting (Low Profile 90 Degree)

Need a Fuel Pressure Regulator? We've made the decision easy and added the most suitable fuel pressure regulator based on the fuel pump selection to the AVAILABLE OPTIONS above "Fuel Pressure Regulator".

Turbosmart Regulator FPR2000

Need a Stainless Steel Fuel Filter (Walbro Only)? Aftermarket Industries developed the first and only 200  micron fuel filter / strainer designed for motorsport conditions and bio-fuels such as ethanol (e85): see AVAILABLE OPTIONS above - "Stainless Steel Walbro Fuel Filter" (select the desired quantity)

Walbro 460 Stainless Fuel Filter

Need the Correct Electrical Connector? High current draw fuel pumps such as the Walbro 460, and Walbro 520 require a high performance external e85 electrical connector. We've developed our own as the OEM Delphi Apex 2.8mm 6 way connector are NOT e85 compatible - two (2) connectors are required and ARE included FREE (includes 6x pins per connector and is designed SPECIFICALLY for 10 AWG (30A) Tefzel Mil-Spec 22759/34 wire

Aftermarket Industries 6 Way Connector (Female)

Power Distribution Kit - See AVAILABLE OPTIONS above - "Power Distribution Kit" (Select 2 Way/Dual Fuel Pump or 3 Way/Triple Fuel Pump)

  • Aftermarket Industries now offers a motorsport-grade Power Distribution Kit for up to 3 pumps (photo below is for promotional purposes only - kit requires assembly, cut & crimp)
  • Package Includes
    • Bussman three way Power Distribution Unit (cavity plugs/cable seals/pins)
    • Low profile laser cut & CNC folded mounting bracket (supplied in black finish)
    • 2-3x 50A mini relays
    • 2-3x 30A circuit breakers
    • 8m 10 AWG (30A) Tefzel Mil-Spec 22759/34 fuel pump power & ground wire
    • 8m 16 AWG (15A) Tefzel Mil-Sec 22759/16 relay signal & ground wire
    • 1x Delphi 280 (30A) series 3 way fuel pump power connector & 10 AWG (30A) pins
    • 1x Delphi 280 (30A) series 3 way relay signal power connector & 16 AWG (15A) pins
    • 1x crimping tool
    • 1x 21 inch 2-4 AWG (75-90A) Tefzel Mil-Spec 22759/36 PDU power cable & 90A type 2 circuit breaker
    • 1x 6 inch 2-4 AWG (75-90A) Tefzel Mil-Spec 22759/16 PDU ground cable


Do I Need To Stage My Fuel Pumps? YES! Fuel pump operation MUST be staged via a Hobbs Pressure Switch, Aftermarket ECU or PDM. See AVAILABLE OPTIONS above - "Hobbs Switch"


  • 4 PSI Hobbs  Switch
  • 24" inch harness with 2x female Delphi 280 Series Connectors & 1x male Delphi 280 Series Connector (includes pins)

Hobbs Pressure Switch

Package includes the following items: Requires Assembly (estimated assembly time 30 minutes; assembly guide provided)

  • SPR400 V2 billet 2.5 Litre surge tank (-8AN fuel ports)
  • Billet push-lock fuel pump adaptor fittings
  • Viton rubber 0-rings included
  • Stainless steel fasteners
  • Billet fuel pump hanger (includes Viton sound dampening rubber fuel pump inserts)
  • Plug & Play 6 way male electrical connector kit (includes stainless steel circlip, o-rings, two (2) female straight connectors and 12 wire pins)
  • E85 compatible fuel pump/bulkhead hose​


Is all this too overwhelming? Don't worry, you're not alone!


Fuel System Advice (FREE)

*These products are designed for race use only and must be correctly fitted by licenced automotive professionals or workshops. Aftermarket Industries is not liable for personal injury, death or for any damaged whatsoever arising from any accident or incident where these conditions are not satisfied.

*These tanks MUST not be pressurised, If you plan to use a high volume in-tank fuel pump you MUST use a-8AN fitting as the Overflow fitting located at the top of the surge tank. This will allow the fuel to return back to your fuel tank or fuel cell at the same rate fuel is supplied into the surge tank. Some vehicles may require modification of the OEM fuel pump assembly: If you are unsure, please complete the contact form and we will respond to your questions.

*It is your responsibility to ensure that the Product is sufficient and suitable for your purposes and meet your individual requirements. We do not warrant that the Products will meet your individual requirements. You acknowledge that the Products are standard and not made bespoke to fit any particular requirements that you may have.

Product Specifications

Weight 7 kg
Dimensions 26 × 26 × 26 cm


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