LongRanger Auxiliary 104 Litre Petrol Fuel Tank - Land Rover Discovery 2005-2016 Series 3 & 4

LONGRANGER TA62AP 104L Auxiliary Fuel Tank – Land Rover Discovery 3 & 4 (2005–2016 Petrol)

Increase the touring range of your Land Rover Discovery with the LONGRANGER TA62AP 104-litre auxiliary fuel tank, designed specifically for Land Rover Discovery 3 and Discovery 4 models built between 2005 and 2016. This auxiliary tank works alongside the factory fuel tank to significantly expand total onboard fuel capacity for long-distance touring and remote travel.

The TA62AP provides 104 litres of additional fuel capacity, increasing total fuel storage to approximately 186 litres when combined with the factory 82-litre tank. This substantial increase allows Discovery owners to travel significantly further between refuelling stops, which is particularly valuable for overlanding, remote expeditions and long-distance off-road travel where fuel stations may be limited.

Unlike replacement long-range tanks, the TA62AP is an auxiliary fuel tank system. It installs in the spare wheel location behind the rear differential, allowing the vehicle’s original tank to remain in place while the auxiliary tank stores additional fuel and transfers it to the main tank when required.

The system includes a fuel transfer pump with automatic pump cut-off, sender unit, LED gauge and control switch, allowing the driver to transfer fuel from the auxiliary tank to the main tank safely and automatically. A dual filler neck is also supplied to integrate the auxiliary tank with the vehicle’s existing filler system.

Installation typically requires approximately five hours, depending on workshop conditions and vehicle configuration. The system is designed to work with the factory tow bar and Kaymar rear bar, and does not require exhaust modifications. However, the spare wheel must be relocated, and access to the cargo area is required to remove the factory wheel winder.

Key Specifications

• Product Code: TA62AP
• Vehicle Compatibility: Land Rover Discovery 3 & Discovery 4
• Model Years: 2005 – 2016
• Vehicle Fitment: D3 and D4 models
• Fuel Type: Petrol
• Auxiliary Tank Capacity: 104 litres
• Total Capacity With Factory Tank: 186 litres (combined with OEM 82L tank)
• Tank Type: Auxiliary fuel tank
• Installation Location: Spare wheel position behind rear differential
• Filler Location: Uses factory filler with dual filler neck supplied in kit
• OEM Fuel Transfer: Electric transfer pump with automatic pump cut-off, sender and gauge
• Installation Time: Approximately 5 hours
• Exhaust Modifications: None required
• Other Modifications: Spare wheel must be relocated
• Compatibility Notes: Works with factory tow bar and Kaymar rear bar

Construction and Design Features

LONGRANGER tanks are engineered using modern CAD/CAM manufacturing processes and built from 2 mm aluminised steel (14-gauge) for durability in demanding off-road environments.

Key design features include:

• Internal baffling and anti-surge dam to maintain fuel pickup during off-road driving
• In-built expansion chamber
• Fully sealed mounting brackets with pre-drilled holes for easier installation
• Cross-break and parallel-break strengthening to stiffen large panels and reduce fatigue cracking during heavy corrugations
• Leading edge deflection angle to help deflect rocks and road debris when travelling off-road
• Max-fold construction, using a single continuous sheet across the base to reduce welded joints and potential stress points

Each tank is also hydrostatically pressure tested at up to 5 psi underwater during manufacturing to ensure structural integrity and leak resistance.

Fuel Transfer and Monitoring System

The auxiliary system includes a solid-state cube transfer pump, designed for reliability across thousands of applications. The pump transfers fuel from the auxiliary tank to the main tank when activated by the driver.

Additional system components include:

• Automatic pump shut-off timers to prevent overfilling
• LED bar-style fuel gauge with transfer pump indicator light
• Automatic dimming switch/gauge module for night driving
• 0–90 ohm fuel level sender unit for accurate fuel monitoring
• SAE-standard fuel delivery hose suitable for automotive fuel systems

The timer module automatically stops fuel transfer when either:

• the auxiliary tank is nearly empty, or
• the main tank approaches full capacity.

Installation Notes

When installing the TA62AP auxiliary tank:

• The spare wheel must be relocated, as the tank installs in the spare wheel location
• Access to the rear cargo area is required to remove the spare wheel winder mechanism
• Vehicles with large drawer systems may require modification or removal during installation
• The system retains the standard departure angle once installed

A comprehensive fitting kit, installation instructions and operating manual are included to assist with installation and system operation.

Benefits of the TA62AP Auxiliary Tank

• 104 litres of additional fuel capacity
• Up to 186 litres total fuel capacity when combined with the factory tank
• Designed specifically for Discovery 3 and Discovery 4 petrol models
• Automatic transfer system with pump cut-off protection
• Heavy-duty construction designed for demanding off-road environments
• No exhaust modification required

Vehicle Compatibility

The LONGRANGER TA62AP is designed for:

• Land Rover Discovery 3 (2005–2009)
• Land Rover Discovery 4 (2010–2016)
• Petrol-powered vehicles

Typical Applications

Auxiliary long-range fuel systems are commonly installed on vehicles used for:

• Long-distance touring
• Remote overlanding expeditions
• Off-road travel in areas with limited fuel infrastructure
• Vehicles carrying heavy equipment or towing loads

By adding 104 litres of auxiliary fuel storage, the TA62AP allows Discovery owners to significantly increase vehicle range while maintaining a safe, integrated and automatically controlled fuel transfer system.

Pricing

All pricing on our website includes VAT, Customs and Shipping for UK customers. If you are looking to purchase outside of the UK, please drop me us an email at info@hoonies.co.uk and we will get you a personalised quote.