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| Manufacturer | LongRanger |
|---|---|
| Product Code | TA62AP |
| Vehicle Compatibility | Land Rover Discovery 3 (2005–2009), Discovery 4 (2010–2016), petrol models |
| Auxiliary Tank Capacity | 104 litres |
| Total Capacity (with factory tank) | 186 litres |
| Tank Material | 2 mm aluminised steel |
| Installation Location | Spare wheel position behind rear differential |
| Transfer System | Electric pump with automatic cut-off, sender unit, LED gauge |
| Filler Neck | Dual filler neck supplied |
| Installation Time | Approx. 5 hours |
| Exhaust Modifications | None required |
| Other Requirements | Spare wheel relocation |
The LongRanger TA62AP 104-litre auxiliary petrol fuel tank is engineered for Land Rover Discovery 3 and Discovery 4 models (2005–2016, petrol only). Designed to work alongside the factory fuel tank, this auxiliary system dramatically increases your vehicle’s total fuel capacity, supporting extended touring, overlanding, and off-road expeditions where refuelling opportunities are limited.
This LongRanger auxiliary tank adds 104 litres of fuel storage, boosting total onboard capacity to approximately 186 litres when combined with the standard 82-litre tank. The system installs in the spare wheel location behind the rear differential, leaving the main tank untouched. Fuel is transferred from the auxiliary to the main tank via a dedicated electric pump, managed by an automatic cut-off and monitored with an integrated LED gauge and sender unit. A dual filler neck ensures seamless refuelling through the factory filler point.
The TA62AP is ideal for Discovery owners planning long-distance journeys, remote overlanding, or off-road travel in areas with sparse fuel infrastructure. It is especially valuable for vehicles carrying heavy loads, towing, or operating in environments where fuel stops are unpredictable. By increasing range and reducing the need for jerry cans, it supports safer, more efficient travel in challenging conditions.
LongRanger tanks are manufactured using advanced CAD/CAM processes and constructed from 2 mm aluminised steel (14-gauge) for strength and corrosion resistance. The design features internal baffling and anti-surge dams to maintain reliable fuel pickup on rough terrain, an in-built expansion chamber, and fully sealed mounting brackets with pre-drilled holes for straightforward fitting. Cross-break and parallel-break strengthening reduces fatigue cracking, while the leading edge deflection angle helps shield against rocks and debris. Each tank undergoes hydrostatic pressure testing at up to 5 psi underwater to ensure leak resistance and structural integrity.
The auxiliary system includes a solid-state cube transfer pump, automatic shut-off timers, an LED bar-style fuel gauge with transfer indicator, and a 0–90 ohm sender unit for accurate fuel level monitoring. The system automatically stops fuel transfer when the auxiliary tank is nearly empty or the main tank is full, reducing the risk of overfilling. SAE-standard fuel delivery hoses are supplied for reliable operation in automotive environments.
Vehicles with large drawer systems may require modification or temporary removal during installation. The system is designed to retain the standard departure angle and does not require exhaust modifications.
For Discovery owners venturing into remote or off-grid environments, limited fuel access can restrict route planning and safety. The LongRanger TA62AP auxiliary tank addresses this by providing reliable, integrated long-range capacity, reducing dependence on external fuel containers and minimising refuelling stops. Its robust construction and automatic transfer system are engineered for demanding off-road use, helping you travel further with confidence.
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.
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.
The system uses a dedicated electric pump with automatic cut-off, allowing the driver to transfer fuel from the auxiliary tank to the main tank at the press of a switch. The process is monitored by an LED gauge and sender unit for safety and convenience.
No exhaust modifications are required. The tank is designed to work with the factory tow bar and Kaymar rear bar, but the spare wheel must be relocated.
No, the TA62AP is specifically designed for petrol-powered Discovery 3 and Discovery 4 models from 2005–2016.
The kit includes the auxiliary tank, electric transfer pump, sender unit, LED gauge, dual filler neck, SAE-standard hoses, comprehensive fitting kit, installation instructions, and operating manual.
Installation typically takes around five hours. Access to the rear cargo area is required, and any large drawer systems may need to be removed or modified. The spare wheel must be relocated as the tank occupies its original position.
The auxiliary tank is designed to retain the standard departure angle for Discovery 3 and 4, ensuring off-road capability is maintained.
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.
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.
