Fuelab Dual 340 LPH E85 Pump Fuel Surge Tank System - 290mm

Solve Fuel Starvation for Good with a Dual-Pump 680 LPH Surge Tank Built for E85 and Race Gas

The Fuelab 60712 Dual 340 LPH E85 Pump Fuel Surge Tank System is an engineered solution for high-demand builds that outpace a standard in-tank pump. Packing two 340 LPH E85-compatible pumps into a 2.7 liter billet aluminum reservoir, the 60712 delivers a combined rated output of 180 GPH at 45 PSI (680 LPH at 3 Bar) at 13.8 volts, enough headroom to support well over 1,000 horsepower. The surge tank format eliminates fuel starvation on hard cornering, braking, and acceleration by keeping a constant ready reserve between the in-tank pickup and the injectors. Built with precision O-ring sealing, -8AN inlet and outlet ports, and an operating voltage range of 8 to 18 volts, the 60712 integrates cleanly into virtually any custom or factory fuel system with little or no modification to the OE tank.

Key Features

• Combined rated flow: 180 GPH at 45 PSI (680 LPH at 3 Bar) at 13.8V
• Dual internal 340 LPH E85-compatible fuel pumps
• 2.7 liter (0.71 gallon) reservoir volume, 290mm tall
• Compatible with Pump Gasoline, Racing Gasoline, and E85 blends up to 100 percent ethanol
• Billet aluminum construction with precision O-ring sealing
• 3x -8AN inlet and return ports plus 1x -8AN outlet port
• Maximum operating pressure: 85 PSI (5.9 Bar)
• Operating voltage range: 8 to 18 volts (compatible with 12V and 16V systems)
• Carbon-carbon commutator design for long-term E85 compatibility
• Prevents fuel starvation and slosh effects during hard cornering, braking, and acceleration
• Pumps can be staged independently via separate terminal power connections
• Little to no modification required to OE fuel tank or module
• Return line required; returns excess fuel back to the vehicle fuel tank
• Fuelab limited lifetime warranty
• Optional FST Upgrade Accessory Kits sold separately

Specifications

What's Included

• 1x Fuelab 60712 dual-pump fuel surge tank assembly (with both pumps pre-installed)
• Installation and operating instructions
• Terminal ring electrical connectors

Frequently Asked Questions

A fuel surge tank is a small secondary reservoir placed between the main fuel tank and the fuel rail. During hard cornering, braking, or acceleration, the fuel in a standard tank can slosh away from the main pickup and cause momentary fuel starvation. The 60712 maintains a constant 2.7-liter supply between the main tank and the engine, ensuring the injectors never run dry regardless of fuel level or driving dynamics.

With a combined rated output of 180 GPH at 45 PSI (680 LPH at 3 Bar) at 13.8 volts, the 60712 is capable of supporting well over 1,000 horsepower on gasoline and E85 builds. Actual power support depends on brake-specific fuel consumption (BSFC), injector size, fuel pressure targets, and your specific application. Fuelab and most builders rate these dual-pump systems at 1,000 to 1,500 horsepower range on E85.

Yes. The Fuelab 60712 is specifically designed for E85 compatibility. The internal pumps use a carbon-carbon commutator that resists degradation from ethanol. The tank is rated for use with Pump Gasoline, Racing Gasoline, and E85 blends. Note that the 60712 is NOT compatible with Diesel or Methanol fuels, and use of those fuels will void the warranty.

Yes, a return line is required on all 607xx series Fuelab surge tank systems. The surge tank is a bypass regulator system, meaning excess fuel is returned from the regulator back to the main vehicle fuel tank. Failing to install a return line or using a deadhead regulator setup can cause an over-pressure condition and damage the pumps.

Yes. The 60712 uses separate terminal ring electrical connections for each pump, allowing you to stage the two pumps independently. You can run a single pump at idle and light cruise for efficiency and then bring the second pump online under load, which many builders accomplish through a fuel pump controller or relay triggered by boost or RPM.

Fuelab requires a 60-micron or finer inline fuel filter on the outlet side of the 60712. Fuelab recommends their own 828xx Series filters with 6, 10, or 40-micron elements. Running without a proper filter can damage the high-pressure injectors and fuel rail components downstream.

The 60712 is designed for racing, off-road, and marine use and is intended for applications where the OE fuel system cannot meet demand. It is not legal for use on emission-controlled vehicles in all states. Check your local, state, and national regulations before installation on a street-registered vehicle. For most dedicated race and track builds, the 60712 is a straightforward addition with little or no modification to the stock tank required.

Both the 60702 and 60712 are dual-pump 340 LPH E85-compatible surge tank systems with identical flow ratings. The primary difference is tank height and volume: the 60702 is 235mm tall with a 2.1-liter reservoir, while the 60712 is 290mm tall with a 2.7-liter reservoir. Both use -8AN ports and billet aluminum construction. Choose the 60712 when you need more reserve volume or have additional clearance available in your engine bay or chassis.

Fuelab offers two optional FST Upgrade Accessory Kits designed specifically for the 290mm series systems. The Basic FST Upgrade Accessory Kit (part 23902) includes essential fittings and hardware, while the Premium FST Upgrade Accessory Kit (part 23904) includes additional components for a more complete installation. These kits are sold separately from the 60712 unit itself.

Installation Overview

1. Identify the mounting location for the surge tank in the engine bay or chassis, ensuring adequate clearance and proximity to the fuel rail.
2. Mount the surge tank securely using the provided or appropriate hardware, keeping the unit upright and stable.
3. Connect the inlet line from the OE in-tank pump or lift pump to one of the 3x -8AN inlet ports on the surge tank.
4. Run a return line from the bypass regulator back to the main vehicle fuel tank using one of the remaining -8AN ports. Do not omit the return line.
5. Connect the -8AN outlet port to the fuel rail feed line, routing through a 60-micron or finer inline fuel filter before the rail.
6. Wire each pump terminal ring connector to a 12-volt power source capable of handling the current draw. For staged operation, connect each pump to a separate relay or fuel pump controller.
7. Prime the system by cycling the ignition several times without starting until fuel pressure stabilizes.
8. Start the engine, verify fuel pressure with an external gauge, and inspect all connections for leaks before operating at full power.

WARNING: This product can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and reproductive harm. For more information go to www.P65Warnings.ca.gov.