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 / v1.1
4 RUNNER MAIN FUEL TANK 120L
Direct-replacement fuel tank engineered to boost capacity while retaining OEM fitment for 4Runner platforms.
TOTAL CAPACITY
120L
EST.RANGE INCREASE
210km - 240km+
PRIMARY MATERIAL
Aluminum-Magnesium Alloy
Vehicle Fitment
MODEL4 Runner
YEAR2009-2023
ENGINE4.0
FUELGasoline
DATA SHEET
TECHNICAL SPECIFICATIONS
ENGINEERING DATA LOG
| MATERIAL | Aluminum-Magnesium Alloy |
|---|---|
| MOUNT POSITION | REPLACEMENT |
| NET WEIGHT | 25KG |
| GROUND CLEARANCE | NO LOSS-HIGH CLEARANCE |
| COATING | Textured Black Powder Coat |
Capacity & Range
TOTAL FUEL VOLUME
120L
Factory: 87L + Fuken: 33L
EST. RANGE INCREASE
210km - 240km+
Fuel System Logic
SYSTEM TYPE
Direct Replacement (OEM Integrated)
High-capacity primary tank upgrade precision-engineered for the 2009-2023 Toyota 4Runner 4.0L. Designed to replace the 87L factory tank, expanding total onboard fuel to 120L. It integrates seamlessly with Toyota’s OEM fuel delivery and EVAP emissions systems, retaining 100% factory sensor and pump functions for a reliable, codes-free installation built for remote overlanding.
Gauge Behavior: The factory gauge remains fully functional. Due to the upgraded 120L capacity, the low-fuel warning triggers with a physical reserve of approx. 19L. Your remaining range (DTE) is dynamically calculated by the vehicle's computer based on real-time consumption; this typically translates to a dependable 110km - 130km+ of safety buffer for your journey.
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
Fuken ALUMINUM TANK
25KG
- 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
What's In The Box
120L 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.
SYSTEM VARIANTS
Other Engineering Configurations
Global Shipping
Available to most countries. Professional logistics network for oversized automotive parts.
Secure Packaging
Reinforced packaging engineered for heavy-duty fuel systems and long-distance maritime transport.
Delivery Time
Estimated 25–40 days depending on destination and selected shipping method (Sea/Air/Rail).
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.