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Long range fuel tanks

One tank fits the MU-X 2021+.

  1. ISMUX21A1 45 litre auxiliary

ISMUX21A1 · 45 litre auxiliary

A 45 litre auxiliary in the passenger side rear quarter. It gravity feeds into the main tank, with a pump to move the last 20 litres. The spare wheel stays put.

Specifications
Part number
ISMUX21A1
Tank type
Transfer auxiliary
Material
Steel
Capacity
45 L
Tank location
Passenger side rear quarter
Filler point
Fills through the auxiliary
Fuel supply
Gravity feed, with a pump for the last 20 L
Fitting time
3.5 hours
Modifications
None required
Fitment notes
All models.
Driving range at 12 L/100 km

Standard vs Brown Davis

+45 Lmore fuel on board
+375 kmextra range (approx.)
+56%more capacity
02505007501,0001,250STANDARD MU-X 2021+ · 80 L667 kmWITH ISMUX21A1 · 125 L1,042 km
Factory fuelWith Brown Daviskm

Standard figure is the factory capacity (80 L factory tank). Range assumes 12 L/100 km, typical for a loaded touring 4x4. Towing, sand and corrugations use more fuel. Never run a tank completely dry.

+45 L is about 2.2 jerry cans you no longer carry on the roof.

The jerry can maths

2.2 jerry cans.
Or one Brown Davis tank.

The ISMUX21A1 for the MU-X 2021+ replaces the factory 80 L tank with a 125 L Brown Davis tank in the same place. That extra 45 L is 2.2 20 L jerry cans you no longer strap to the roof.

2.2 × 20 L · about 17 kg of diesel in each
Brown Davis long range fuel tank+45 Lone tank · bolted in · filled at the bowser
38 kgof diesel lifted by hand at every refill
3pours, caps and chances to spill
0cans on the roof with a Brown Davis tank
2.2 × 20 L jerry cans
Brown Davis tank
Carrying it
On the roof rack, raising your centre of gravity
Under the vehicle, inside the chassis line
Refuelling
Stop, unstrap, pour, repeat 3 times
Fill at the bowser like your factory tank
Lifting
About 38 kg of diesel lifted by hand
Nothing to lift
Spills and fumes
Every pour is a chance to spill
Sealed system with a rollover valve
Theft
Cans on the roof are easy to take
Bolted to the chassis
Knowing what is left
Lift each can and guess
Read it on your fuel gauge

The Explore Life · Africa series

Questions

Yes. Every Brown Davis tank comes with the brackets, hoses, fittings and step-by-step instructions. Auxiliary tanks also include the pump or changeover wiring and a gauge.

Replacement tanks use the factory sender, so your gauge keeps working. Auxiliary tanks come with their own gauge.

The vehicle's computer still thinks it has the factory tank size, so the distance-to-empty figure will read low. Use the fuel gauge and your trip meter instead.

No. Our tanks follow the factory lines and keep your ramp-over and departure angles.

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