TOYOTA FJ CRUISER

110 LITRE AUXILIARY LONG RANGE FUEL TANK

Unlock the full potential of your petrol-powered Toyota FJ Cruiser with the Brown Davis 110L Auxiliary Long Range Fuel Tank. Specifically engineered to integrate seamlessly with the FJ Cruiser’s design, this tank significantly increases your fuel-carrying capacity from 72 litres, to a massive 182 litres—extending your range without compromising factory ground clearance or spare wheel placement.

For petrol four-wheel drives like the FJ Cruiser, touring range can be limited, especially when towing, tackling soft sand, or exploring remote tracks where fuel stops are few and far between. The Brown Davis 110L Auxiliary Tank solves that challenge, offering the extra range needed for real adventure while preserving the vehicle’s balance and reliability.

Designed and tested in Australia, this tank allows you to keep moving longer with fewer fuel stops, making it the perfect upgrade for off-road explorers, outback tourers, or anyone serious about making the most of their FJ Cruiser. With the Brown Davis Auxiliary Tank on board, you’re geared to go further, safer, and with confidence.

Specifications

PART NUMBER: TFJCA1

SUITS: MODELS WITHOUT FACTORY REAR SUB-TANK

TANK TYPE: AUXILIARY

CAPACITY: 110 LITRE

FILLER POINT: STANDARD

FUEL SUPPLY METHOD: TRANSFER TO MAIN TANK

TANK LOCATION: BEHIND REAR AXLE

FITTING TIME: 5 hour/s

MODIFICATIONS: NONE REQUIRED

Photos of Fitted Tank

Key Features

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Tapered departure angle to reduce chance of damage and maintain factory clearance

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Internal baffling system to prevent fuel slosh and strengthen tank structure

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Gusseted brackets with double thickness pads to spread tank mounting loads

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Fuel pump sender flange

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Filler tube Y pipe connects to original filler

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Fast fill breather for rapid filling and to reduce bowser shut off (works with fast fill)

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Drain plug

Fuel Feed System

TRANSFER PUMP

This system is designed to pump the fuel from the Brown Davis auxiliary fuel tank into the vehicles standard fuel tank. At the flick of a switch fuel will be pumped into your vehicles standard tank to then be feed to the engine. An LED gauge is supplied to show driver the fuel level of the auxiliary fuel tank at all times. When the auxiliary tank becomes empty an automatic alarm will sound to tell driver to switch pump system off. This prevents pump from continuously running which can course pump failure. All parts and hardware for install are supplied

Fuel pumps burning out is now a thing of the past. Brown Davis has developed a new auxiliary fuel tank gauge, switch and buzzer unit to be supplied with most Brown Davis auxiliary transfer fuel tanks. the small unit is no bigger then a 10 cent coin and can be mounted nicely in vehicles dashes.

TANK FULL

FUEL NOT TRANSFERRING

The LED Gauge will show the auxiliary tank’s fuel level at all times, even when the pump is not running.

TANK FULL

FUEL TRANSFERRING

When the button is pressed, the fuel pump will commence transferring fuel from the auxiliary fuel tank to your vehicles main fuel tank. The round yellow LED light indicates that the pump is running.

TANK HALF FULL

FUEL TRANSFERRING

As fuel is being transferred from the auxiliary to the main fuel tank, the LED light will indicate the fuel level remaining within the Brown Davis auxiliary fuel tank. At any stage, the fuel pump activator button on the gauge can be pressed to stop the transfer of fuel.

TANK EMPTY

FUEL TRANSFERRING

When the auxiliary fuel tank is empty, a buzzer will sound prompting the driver to turn the fuel pump off. This is designed to prevent the fuel pump from any damage and increase its longevity.

Fuel Capacity and Driving Range Comparison

Figures based on FJ Cruiser V6 Petrol (as quoted by Toyota)
Fuel Consumption (11.4L/100km)Percentage Increase
Brown Davis Long Range Fuel Tank
72 Litre Standard Tank631km–
182L Total – 110L Brown Davis Aux Tank + 72L standard tank1,596km152.8%

152.8% INCREASE!

Whilst every effort has been made to ensure these figures are accurate vehicles may vary. Vehicles should never be pushed to the point of running out of fuel as it may harm your vehicles engine.

Compatibility

Confirmed fitment

  • Models

    2007, 2008, 2009, 2010, 2011, 2012: Fits FJ Cruiser’s without factory rear sub-tank – generally pre 2013.

International vehicles

  • Confirmed fitment

    Middle East, Africa, Asia, Americas

Aftermarket Accessories

  • Suspension

    Fits with most aftermarket suspension and air bag suspension – confirmed with OME (ARB), TJM, EFS, PEDDERS, IRON MAN, TUFF DOG, DOBSONS, AIR BAG MAN.

  • Rear Bars

    Confident fitment with most rear bars – yet to be confirmed with Kaymar and MCC rear bar.

  • Exhuasts

    Fits with most aftermarket exhausts – Exhausts with rear hotdog style muffler may interfere with brackets.

Step by Step DIY Instructions

The Brown Davis Toyota FJ Cruiser tank comes with step by step instructions that walk you through every step of the install.

Warranty and Support

For total peace of mind Brown Davis offers a 3 year warranty on all its fuel tanks. With an Australia wide network built over the 40+ years in the industry, you can go away on your longest journey knowing you will have full support with any issues.

Why Brown Davis

Looking to tackle the toughest off-road adventures without worrying about running out of fuel? Brown Davis’ Long-Range Fuel Tanks are the ultimate solution. Built tough, these tanks are designed to extend your range, ensuring you can go further, explore deeper, and push boundaries without the constant need to refuel or carry those pesky jerry cans. Whether you’re navigating rugged tracks or embarking on an epic tour of Australia, trust Brown Davis to keep you powered up every step of the way. Engineered for durability and reliability, our tanks are the perfect upgrade for the serious adventurer. Ready to go further?

Watch Jase from All4Adventure show the benefits of a Brown Davis Long Range Fuel Tank!

Brown Davis manufactures a wide range of both Steel and Poly tanks so finding the right type of tank for your vehicle is crucial. Many factors need to taken into account so below are the highlights of both our steel and poly long range fuel tanks.

STEEL LONG RANGE FUEL TANKS

  • DRAIN PLUG

    ALL BROWN DAVIS STEEL FUEL TANKS COME WITH A DRAIN PLUG FOR DRAINING CONTAMINATED FUEL OR EVEN COLLECTING SOME FUEL FOR A MATE.

  • BAFFLES

    ALL BROWN DAVIS STEEL LONG RANGE FUEL TANKS HAVE INTERNAL BAFFFLES, THIS MINIMIZES FUEL SLOSH AND MOVEMENT. ALSO PROVIDING THE TANK WITH GREATER STRENGTH AND INGEGRITY.

  • SWIRL POT

    ALMOST ALL BROWN DAVIS STEEL LONG RANGE FUEL TANKS HAVE AN INTERNAL SWIRL POT. THIS DESIGN TRAPS FUEL AROUND THE PICK UP SO THAT YOU CAN RUN DOWN TO THE LAST FEW LITRES.

For 4WDs and tourers planning to head off the beaten track, our aluminized steel Long Range Fuel Tank is the best option. 

POLY LONG RANGE FUEL TANKS

  • LIGHT WEIGHT

    IF WEIGHT IS CRITICAL IN YOUR VEHICLE ON AVERAGE MOST LONG RANGE POLY TANKS ARE 10-15KG LIGHTER THAN STEEL TANKS.

For fleet managers and customers sitting primarily on surfaced road, poly long range fuel tanks is a great option.

Justin from Patriot compares steel and poly Long Range Fuel Tanks

Building a Brown Davis Tank

Since the beginning, Brown Davis has taken pride in the construction of our tanks, our Toyota FJ Cruiser tank is no exception. Our tanks are made with quality and care, from the materials we use to the stringent pressure testing, they are prepared for the harshest conditions.

Laser Cut Aluminized Steel

Manufacturing our steel tanks starts with laser cut aluminized steel. With this material, your tank will have the strength and durability of steel, and the anti-corrosive properties of aluminum to make sure their is no rust.

Folded Before Welded

Before welding the tank, we use specialized machinery to fold the laser cut aluminized steel to decrease the amount of time and labor put into welding. Folded parts also have superior strength to welded parts.

High Quality Welding Every Time

Next, our experienced welders add the brackets, swirl pot and baffles to the tank and then weld it all off.  We use jigs to locate the brackets for each individual tank so installation is as consistent and easy as possible for every vehicle.

Pressure Testing

Lastly, we take it through an air pressure test. This involves a soap test, submersion test and a pressure gauge. These techniques help us identify any rare leaks and where they’re coming from. If air isn’t coming out, fuel definitely isn’t.

Building a tank- A walk through with Matt from The Explore Life

Frequently Asked Questions

Yes. All Brown Davis Fuel Tanks come with everything required to be fitted to your vehicle. This includes auxiliary (secondary) Fuel Tanks which come with electric fuel pump, hoses, wiring and fuel gauge.

After the installation of any Long Range Fuel Tank the vehicles fuel gauge (needle fuel gauge) will change slightly. This will be different in each vehicle depending on the tank shape. Some tanks will remain on full for a few hundred kilometres due to the extra height in the new tank. In most of the more popular tanks, we supply a special float arm to go with our tank, this gives a more accurate reading for the gauge. What we do make sure of is that the vehicles low fuel light and empty point is accurate on all tanks. This of course is the point on the gauge you want absolutely correct.

In short, the distance to empty function on your trip computer won’t remain accurate with your new Long-Range Tank. This is because the vehicles ECU (Engine Control Unit) has the volume of the original tank size programmed within it. However, with many of our Long-Range Replacement Fuel Tanks being approximately double the volume of the original fuel tank, you can simply double the ‘distance to empty’ reading to roughly estimate your new driving range.

For certain makes and models there are unaffiliated 3rd party software programs that can re-write information to your ECU, for example, there are options for the Ford Ranger. We believe this fix is ultimately unnecessary, however, if you wish to have your ‘distance to empty’ read true for the new fuel volume, we recommend researching if there are options available for your vehicle. 

Good news is, your fuel gauge will remain accurate, as the float inside the tank will indicate how much fuel is inside the tank, so your readings going from Full, to ¾ to ½ right down to empty will remain accurate. Furthermore, your low fuel warning light will work as intended.

We recommend to zero your odometer when you refuel and check your fuel consumption. Over time you’ll be able to establish how far you can travel in different driving conditions, i.e. towing, sand, dirt, etc. 

If you are planning to go off-road, we recommend our Steel Long Range Fuel Tanks where extra protection is not necessary. Made from 2mm Aluminised Steel, strength and durability are without question. Need more convincing? Check out the boys from All4Adventure and ExploreLife, both who run our steel tanks and have seen their fair share of remote and rugged environments.

Our Long Range Replacement Fuel Tanks are designed to make no impact to your vehicle’s stock clearance and ramp over angle. We design our Fuel Tanks with not only touring but hard four-wheel-driving in mind, therefore, maintaining stock clearance is paramount. 

Check out our Range of products for the Toyota FJ Cruiser

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