Reinforced Bottom Plate
A reinforced 5mm bottom plate improves durability and provides additional protection in uneven terrain and off-road driving conditions.
PROJECT // PRIMARY FUEL SYSTEM UPGRADE
REV. 2026 / V17.1
QX80 MAIN FUEL TANK 138L
Direct-replacement fuel tank engineered to boost capacity while retaining OEM fitment for Infiniti QX80 platforms.
TOTAL CAPACITY
138L
ESTIMATED RANGE
280km - 320km+
PRIMARY MATERIAL
Aluminum-Magnesium Alloy
Vehicle Fitment
MODELQX80
YEAR2025+
ENGINE3.5TT
FUELGasoline
DATA SHEET
TECHNICAL SPECIFICATIONS
ENGINEERING DATA LOG
| MATERIAL | Aluminum-Magnesium Alloy |
|---|---|
| MOUNT POSITION | REPLACEMENT |
| NET WEIGHT | 25.6KG |
| GROUND CLEARANCE | NO LOSS-HIGH CLEARANCE |
| COATING | Textured Black Powder Coat |
Capacity & Range
TOTAL FUEL VOLUME
138L
Factory: 97L + FK: 41L
EST. RANGE INCREASE
280km - 320km+
Fuel System Logic
SYSTEM TYPE
Direct Replacement (OEM Integrated)
Premium high-capacity replacement tank engineered specifically for the 2025+ Infiniti QX80 3.5TT. Precision-designed to replace the 97L factory unit, expanding total onboard capacity to 138L. It integrates flawlessly with Infiniti’s advanced fuel management and EVAP systems, retaining all original sensor and pump functions to ensure a codes-free, OEM-level luxury touring experience.
Gauge Behavior: The factory gauge remains fully functional. Due to the expanded 138L capacity, the low-fuel warning triggers with a physical reserve of approx. 22L. Your remaining range (DTE) is dynamically calculated by the vehicle's computer based on real-time consumption; this typically translates to a generous 150km - 180km+ of safety buffer depending on your driving conditions and load.
Structure & Protection Design
01
02
Internal Baffle System
Internal baffles help control fuel movement inside the tank, improving vehicle stability and fuel pickup reliability on uneven terrain.
03
Heat Shield Protection
Integrated heat shielding reduces exhaust heat exposure and helps protect fuel system components from excessive temperature.
04
Strap Shield Protection System
Recessed mounting pockets allow the tank straps to sit flush within protected zones, reducing the risk of strap damage or snagging when sliding over obstacles off-road.
05
Quick-Connect Fuel Line Fittings
Equipped with OEM-style quick-connect fittings for secure sealing, simplified installation, and reliable fuel line connections.
06
Integrated Drain Port
An integrated drain port allows fuel to be safely drained for maintenance, repairs, or long-term storage without removing the tank.
07
Direct Bolt-On Installation
Designed to mount to factory locations using original mounting points. No chassis cutting, drilling, or permanent modifications required.
08
Individual Serial Identification
Each tank is marked with a unique serial number for product identification, quality tracking, and authenticity verification.
Weight & Material Engineering
Designed to reduce weight without compromising strength, ideal for long-range and overland use.
ENGINEERING CHOICE
FK ALUMINUM TANK
25.6KG
- MATERIALAL 5052
- PROTECTIONNATIVE ANTI-RUST
- BEST FOROVERLANDING
TYPICAL ALTERNATIVE
TRADITIONAL STEEL
70KG
- MATERIALMILD STEEL
- COATINGEASY TO CORRODE
- IMPACTHIGH CHASSIS LOAD
TECH DOC // INSTALLATION
Installation & Technical Notes
EST. TIME
2 Hours
DIFFICULTY
100% Bolt-on
CHASSIS MOD
NONE
EXHAUST MOD
NONE
PUMP MOD
NONE
Installation Video Guide
What's In The Box
138L Main Tank: Direct replacement for the factory unit.
Mounting Hardware: Fully factory-compatible brackets and bolts.
No Complexity: No additional control modules or switches.
Mounting Hardware: Fully factory-compatible brackets and bolts.
No Complexity: No additional control modules or switches.
Global Shipping
Available to most countries. Hassle-free international delivery.
Secure Packaging
Reinforced packaging engineered for heavy-duty fuel systems and long-distance maritime transport.
Delivery Time
Estimated 25–40 days depending on destination, shipping method, and local logistics conditions.
LONG-TERM ASSURANCE
3-YEAR WARRANTY & SUPPORT
Built to support long-term ownership, not just short-term trips. We provide transparent coverage for the life of your expedition rig.
TANK BODY
3-YEAR STRUCTURE
Full structural coverage against manufacturing defects under normal off-road usage.
COMPONENTS
LIFETIME SUPPORT
Ongoing technical support and replacement parts availability for original owners.