INEOS QUARTERMASTER (2023 – PRESENT)

105 & 168 LITRE AUXILIARY LONG RANGE FUEL TANK

Brown Davis, the trusted name in rugged, high-performance fuel tanks, has just unveiled their latest innovation for the INEOS Grenadier Quartermaster—a long-range fuel tank designed to keep you going further, no matter the terrain. Whether you’re taking on everyday road trips or embarking on extreme off-road adventures, the Brown Davis long-range fuel tank is engineered to meet the demands of the toughest journeys.

105 Litre Auxiliary Tank: The Perfect Solution for Touring

The first option in this line-up is the 105-litre auxiliary tank, which is seamlessly installed behind the vehicle’s rear axle. This auxiliary tank is the perfect upgrade for those who need extra fuel capacity without sacrificing practicality. With a massive increase in fuel storage, the 105-litre tank more than doubles the Grenadier Quartermaster’s fuel capacity, giving you the freedom to explore further without constantly worrying about fuel stops.

This tank is ideal for road trips, longer drives, and general daily use, offering peace of mind for those who prefer to travel off the beaten path.

168 Litre Two-Part Auxiliary Tank: For the Ultimate Adventure

For the true adventurer, Brown Davis offers the two-part 168-litre auxiliary tank, designed for the most extreme expeditions. This options consists of the 105 litre tank, but ads a smaller 65 litre tank behind it for a total of 168 litres. This larger setup offers serious off-road enthusiasts the ultimate range, ensuring you can tackle the most remote regions with confidence. Whether you’re crossing deserts, climbing mountains, or venturing through the bush, the combined 168-litres provides a huge capacity, pushing your Grenadier Quartermaster’s fuel range to an impressive level.

Seamless Integration & Installation

Both tanks are designed to be fully integrated into the vehicle, transferring fuel directly into the main tank, allowing for easy management of fuel levels. Brown Davis has ensured that each system comes with all the necessary hardware and parts required for a full installation, making the upgrade process as smooth as possible.

  • Vehicle Spare Wheel Removal: To accommodate the larger tanks, the vehicle’s spare wheel will need to be removed, creating the perfect space for installation.
  • Tanks for Tray Vehicles: For those with aftermarket tray setups, a standalone filler can be installed, allowing for added convenience and flexibility. (NOT SUPPLIED)
  • Compatibility with Standard Tubs: Tanks are supplied with a new dual neck filler, allowing you to utilise fast flow diesel pumps. Hoses to suit vehicles with standard tubs are supplied, ensuring compatibility across a wide range of setups. 

A Total of 258 Litres: Unstoppable Range

The most incredible feature of the Brown Davis long-range tank system is the staggering total fuel capacity it offers. When combined with the factory main 90 litre fuel tank, your INEOS Grenadier Quartermaster can achieve a total fuel capacity of 258 litres—a truly massive range that sets you up for even the most extended adventures. Imagine the freedom to journey across vast expanses of wilderness, remote locations, and off-the-grid destinations, all without worrying about running out of fuel.

Fuel Your Adventures, Go Further with Brown Davis

With the Brown Davis long-range fuel tanks, you’re ready to take on the world. With capacities ranging from the everyday-friendly 105 litres to the extreme adventurer’s 168 litres, you can customize your fuel setup to suit your needs.

Don’t let fuel range be a limitation—whether you’re on a short weekend getaway or a multi-week off-road expedition, the Brown Davis long-range fuel tank system gives you the freedom to explore without boundaries. So, gear up, hit the road (or off-road), and know that your INEOS Grenadier Quartermaster is ready for whatever adventure lies ahead.

 

NEW DUAL FILLER NECK SUPPLIED FOR TUB – WORKS WITH HIGH FLOW PUMP

Specifications

PART NUMBER: IG23A2

TANK TYPE: AUXILIARY

CAPACITY: 105 LITRE

FILLER POINT: STANDARD LOCATION – NEW DUAL FILLER NECK (SUPPLIED)

FUEL SUPPLY METHOD: TRANSFERS TO MAIN TANK

TANK LOCATION: BEHIND REAR AXLE

FITTING TIME: 6 hour/s

MODIFICATIONS: REMOVAL OF REAR MUFFLER – NEW EXHAUST TIP SUPPLIED

PART NUMBER: IG23A3

TANK TYPE: AUXILIARY

CAPACITY: EXTRA 63L – COMBINED 168 LITRES

FILLER POINT: STANDARD LOCATION – NEW DUAL FILLER NECK (SUPPLIED)

FUEL SUPPLY METHOD: TRANSFERS TO MAIN TANK

TANK LOCATION: BEHIND REAR AXLE

FITTING TIME: 8 hour/s

MODIFICATIONS: REMOVAL OF REAR MUFFLER – NEW EXHAUST TIP SUPPLIED

Photos of Fitted Tank

Key Features

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Tapered departure angle to reduce chance of impact 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 filler supplied with kit or optional twin filler upgrade)

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

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Cushion clamp locators to retain fuel lines and prevent damage and kinking

IG23A2 – 105L

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IG23A2 – 105L tank

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Extra 63L tank combined with IG23A2 – 168L total

IG23A3 – 168L

Filler neck

Please advise us whether your INEOS Quartermaster has the factory tub or an aftermarket tray so we can tailor to your needs.

FILLER FOR QUARTERMASTER TUB

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New dual filler neck (supplied with kit)

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Filler for Brown Davis auxiliary fuel tank

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Filler for INEOS Quartermaster main fuel tank

FILLER FOR QUARTERMASTER WITH TRAY

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Filler neck for Brown Davis auxiliary fuel tank (supplied with kit)

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Filler neck for INEOS Grenadier main fuel tank

Fuel Feed System

FUEL TRANSFER SYSTEM

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

IG23A2 – 105L

Figures based on Turbo Diesel engine (as quoted by INEOS)
Fuel Consumption (10.5L/100km)Percentage Increase
Brown Davis Long Range Fuel Tank
90 Litre Standard Tank857km–
195L Total – 90L Standard + 105L Auxiliary1,857km116.7%

116.7% INCREASE!

IG23A3 – 168L

Figures based on Turbo Diesel engine (as quoted by INEOS)
Fuel Consumption (10.5L/100km)Percentage Increase
Brown Davis Long Range Fuel Tank
90 Litre Standard Tank857km–
258L Total – 90L Standard + 168L Auxiliary2,457km186.7%

186.7% 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

DUAL CAB

Confirmed fitment

  • Models

    2023 – Quartermaster Dual Cab

    2024 – Quartermaster Dual Cab

    2025 – Quartermaster Dual Cab

International vehicles

  • Confirmed fitment

    Confident fitment with world spec vehicles

Optional Upgrades

  • TWIN FILLER NECK

    Optional twin filler neck upgrade to allow use with high flow diesel pump and allows user to pick and choose which fuel tank to fill or leave empty.

Aftermarket Accessories

  • Suspension

    Confident fitment with all suspension lifts, GVM upgrades and air-bag kits

  • Trays and tubs

    Confident fitment with all aftermarket trays

  • Trays and tubs

    Confident fitment with all aftermarket trays

Step by Step DIY Instructions

The Brown Davis INEOS Quartermaster (2023 – Present) 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 INEOS Quartermaster (2023-Present) 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. 

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