LongRanger TA62A 104L Auxiliary Diesel Fuel Tank – Land Rover Discovery 3 & 4 (2005–2016) Long-Range Upgrade
LongRanger TA62A 104L Auxiliary Diesel Fuel Tank – Land Rover Discovery 3 & 4 (2005–2016) Long-Range Upgrade
Couldn't load pickup availability
Fitment check
Fitment check
Fitment check
Check these details before ordering. If anything is unclear, contact us with your vehicle, year and current setup.
Specs and options
Specs and options
Questions before checkout?
Questions before checkout?
Questions before checkout?
Send us your vehicle, year and current setup and we will help check fitment before you order.
Ask about this product
Delivery, returns and support
Delivery, returns and support
Delivery, returns and support
Delivery timing can vary by supplier, product size and current stock. Contact us before ordering if you are working to a fitting date, event, trip or deadline.
Keep packaging and product paperwork until fitment is confirmed. If anything looks wrong when it arrives, get in touch before installation so we can help check the next step.
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
- Engineered specifically for Discovery 3 & 4 diesel models (2005–2016), excluding AdBlue-equipped vehicles
Construction and Engineering Details
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
Technical Specifications
| Manufacturer | LongRanger |
|---|---|
| Product Code | TA62A |
| Vehicle Compatibility | 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 |
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.
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.
Ready to order?
Add LongRanger TA62A 104L Auxiliary Diesel Fuel Tank – Land Rover Discovery 3 & 4 (2005–2016) Long-Range Upgrade to your build
Add to cart now. If fitment is unclear, send us your vehicle, setup and goal before ordering.
Hoonies Garage
Tell us what you are building
Hoonies Garage is a quieter way to get useful updates. Share the vehicle family, build direction and mods already fitted, then we can send fewer, better product drops and fitment notes.
- Save the vehicle family and build direction
- Tell us the mods already fitted
- Choose the updates that would actually help
Need help with this product?
Send us your vehicle, setup and goal before ordering. We will help confirm fitment, product choice or the next step.