Delivery, customs and taxes
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For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. Outside the UK, shipping is shown at checkout and local customs and taxes remain your responsibility.
Lead times and urgent orders
Check timing before you commit
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Some products are made to order, imported or custom built. If timing matters, contact us before ordering and we will confirm the expected delivery timeframe.
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Land Rover Discovery 3 (2005–2009), Discovery 4 (2010–2016), Diesel only
Auxiliary Tank Capacity
104 litres
Total Fuel Capacity
Approx. 186 litres (with factory 82L tank)
Tank Type
Auxiliary (factory tank remains installed)
Installation Location
Spare wheel position, behind rear differential
Filler Location
Original filler retained, dual filler neck supplied
Fuel Transfer System
Electric transfer pump, automatic cut-off, LED gauge, sender unit
Exhaust Modifications
None required
Construction Material
2 mm aluminised steel
AdBlue Compatibility
Not compatible
Auxiliary Fuel Capacity for Land Rover Discovery 3 & 4
The LongRanger TA62A 104L Auxiliary Diesel Fuel Tank is engineered to extend the touring range of Land Rover Discovery 3 and Discovery 4 (2005–2016) diesel models. Designed for serious overlanders and expedition drivers, this auxiliary tank system increases total fuel capacity without removing the factory tank, supporting extended journeys where fuel stops are scarce.
How the TA62A Auxiliary Tank Works
This LongRanger auxiliary tank is installed in the spare wheel location behind the rear differential, working in tandem with the original 82L factory tank. The system uses an electric transfer pump to move fuel from the auxiliary tank to the main tank as needed, all managed via an automatic cut-off and in-cabin LED gauge for safe, controlled transfer.
Where This Upgrade Is Useful
The TA62A is ideal for Discovery owners planning remote outback travel, long-distance touring, or expeditions where access to diesel is limited. It is especially valuable for vehicles carrying heavy loads, towing, or operating in regions with infrequent fuel stations. By increasing total capacity to approximately 186 litres, drivers can confidently tackle longer routes and remote tracks, reducing the risk of running low on fuel far from help.
Key Benefits of the LongRanger TA62A Auxiliary Tank
104 litres of additional diesel storage for extended range
Maintains factory tank and original filler location with dual filler neck
Electric transfer pump with automatic shut-off and LED gauge
No exhaust modifications required
Heavy-duty 2 mm aluminised steel construction for off-road durability
Retains standard departure angle and is compatible with factory tow bars and Kaymar rear bars
LongRanger tanks are manufactured using CAD/CAM processes and constructed from 2 mm (14-gauge) aluminised steel, providing strength and corrosion resistance for demanding off-road use. Each tank features:
Internal baffling and anti-surge dam to maintain fuel supply on uneven terrain
Integrated expansion chamber for pressure control
Fully sealed mounting brackets with pre-drilled holes for straightforward installation
Cross-break strengthening to reduce panel fatigue on corrugated roads
Leading-edge deflection angle to help deflect rocks and debris
Max-fold construction with a continuous sheet base to minimise weld stress
Every tank is hydrostatically pressure tested underwater at up to 5 psi to ensure leak-free performance and long-term reliability.
Installation and Compatibility Notes
Installs in the spare wheel position; spare wheel must be relocated
Access to the rear cargo area is required to remove the factory spare wheel winder
Large drawer systems may require removal or modification during installation
Compatible with factory tow bars and Kaymar rear bars
Vehicle’s standard departure angle is retained
Not suitable for vehicles fitted with AdBlue systems
Why Add an Auxiliary Fuel Tank?
Remote touring often means unpredictable fuel availability, especially in the outback or on extended expeditions. The LongRanger TA62A solves the problem of limited range by providing a safe, integrated auxiliary fuel solution. This allows drivers to plan longer routes, carry extra supplies, and reduce the risk of being stranded due to fuel shortages.
Delivery, customs and taxes
Know the landed cost before you order
For UK customers, prices include VAT, customs and delivery unless checkout states otherwise. For customers outside the UK, local customs and taxes remain your responsibility, and shipping is shown at checkout. If a shipping option is not available, email us and we will prepare a tailored quote.
Lead times and urgent orders
Check timing before you commit
Many of the products we sell are made to order, imported or custom built, so a lead time may apply. If you need a part urgently, contact us before ordering and we will confirm the expected delivery timeframe and process.
Questions before you order
Frequently asked questions
How does the auxiliary tank transfer fuel to the main tank?
The system uses an electric transfer pump with automatic shut-off, allowing fuel to be moved from the auxiliary tank to the main tank at the push of a button. The process is monitored via an in-cabin LED gauge and sender unit.
Will I need to modify my exhaust or tow bar?
No exhaust modifications are required. The tank is compatible with factory tow bars and Kaymar rear bars.
Does installing the tank affect my spare wheel?
Yes, the auxiliary tank uses the spare wheel location. The spare wheel will need to be relocated.
Is this tank suitable for petrol or AdBlue-equipped models?
No, the TA62A is designed exclusively for diesel-powered Discovery 3 and 4 models without AdBlue systems.
What is involved in installation?
Installation requires access to the rear cargo area and may involve removing or modifying drawer systems. All mounting hardware and a dual filler neck are included for integration with the original filler location.
How is fuel level monitored?
The system includes a 0–90 ohm sender unit and LED gauge to provide accurate fuel level readings for the auxiliary tank.
Fitment first
Exact fit for your vehicle, checked before you order
Use the checked vehicle route, then confirm model year, engine, drivetrain, hardware and existing modifications on the product page or with our team before you commit.
✓ Fits Discovery
Need help with this product?
Send us your vehicle, year, current setup and any fitting date, event, trip or deadline before ordering. We will help check fitment, product choice and timing.