2003-2009 Toyota 4Runner Auxiliary Fuel Tank System 18 Gallon
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2003-2009 Toyota 4Runner Auxiliary Fuel Tank System 18 Gallon
Description
The Helivue Design 18 Gallon Auxiliary Fuel Tank System is purpose-built for 2003-2009 Toyota 4Runner owners who refuse to compromise on range, capability, or factory features. Designed and manufactured in the heart of Colorado, this system has been real-world tested from 5,000 to 13,000 feet of elevation - beaten, bashed, and driven hard without failure. Constructed from 1/8" 5052 aluminum with a hammer finish satin black powder coat, it delivers serious corrosion resistance and a clean, factory-integrated appearance that tucks above the bumper line and stays virtually invisible.
What sets this system apart is what it lets you keep: your KDSS, factory air ride, and Class 4 receiver hitch all remain fully intact. The auxiliary tank fills through your factory filler neck, simultaneously topping off both tanks at once, and the included side-corner fuel pickup even lets you share fuel with another vehicle when the trail calls for it. Everything you need for a clean, complete installation is included right in the box.
Key Features
- 18 Gallon Capacity: Dramatically extends your driving range - ideal for overlanding, remote travel, or long commutes far from the pump.
- 1/8" 5052 Aluminum Construction: Thicker-than-standard aluminum alloy offers superior corrosion resistance and long-term durability under harsh conditions.
- Hammer Finish Satin Black Powder Coat: Rugged, attractive finish that blends seamlessly with the 4Runner's undercarriage and resists chips and scratches.
- OEM Split Fill Point: Fills through your factory filler neck and simultaneously fills both the primary and auxiliary tanks - no extra steps required.
- KDSS, Air Ride & Hitch Compatible: Retains your factory KDSS suspension, factory air ride system, and Class 4 receiver hitch - no sacrifices necessary.
- Side-Corner Fuel Pickup: Allows you to transfer fuel to another vehicle directly from the auxiliary tank - a standout feature for group overlanding trips.
- Above-Bumper-Line Clearance: High-clearance design tucks above the bumper line and keeps all factory evap systems in place for a nearly invisible install.
- Programmable Transfer Switch & Fuel Level Gauge: Included high-quality programmable fuel transfer switch with fuel level gauge keeps you informed and in control.
- 100% Designed & Built in the USA: Engineered and manufactured in Colorado - no overseas shortcuts, no compromises on quality or fitment.
- Recommended Install Time - 5 Hours: All necessary hardware included for a straightforward DIY install, including stainless steel clamps, hardware, and bung.
Shipping
Please email us at service@omahasportsandgames.com for a delivery ETA or to confirm shipping details.
What's Included
- 18 Gallon aluminum auxiliary fuel tank
- Programmable fuel transfer switch with fuel level gauge
- Quality fuel pump
- Stainless steel fuel level sender
- Stainless steel clamps
- Stainless steel hardware
- Bung
Why You'll Love It
Helivue Design built this system for people who push their 4Runner to its limits - overlanders tackling remote trails, commuters covering serious mileage, and anyone who can't afford to run out of fuel far from civilization. This tank has been proven in the real world at elevation, over rough terrain, and in demanding conditions that would expose any weak point in a lesser design. It's made entirely in the USA, engineered to fit the 4th Gen 4Runner without cutting corners on your factory equipment, and built to last the life of your vehicle.
The nearly invisible installation means you get a massive range upgrade with none of the visual bulk or factory feature tradeoffs that plague other auxiliary tank solutions. Whether you're planning a multi-day overland expedition or just want the confidence of never watching the fuel gauge drop into the red, this system delivers exactly that - reliably, cleanly, and without compromise.
Product Specifications
View Product Specs
| Tank Type | Auxiliary |
|---|---|
| Capacity | 18 Gallons |
| Fuel Type | Gasoline |
| Fill Point | OEM Split (factory filler neck) |
| Material | 1/8" 5052 Aluminum |
| Finish | Hammer Finish Satin Black Powder Coat |
| Weight | 25 Pounds |
| Spare Tire Relocation Required | Yes |
| Recommended Install Time | 5 Hours |
| Compatibility | 2003-2009 Toyota 4Runner (4th Gen) |
| Country of Manufacture | USA (Colorado) |
FAQ
Will this auxiliary tank work with my 4Runner's KDSS or factory air ride suspension?
Yes - this is one of the key advantages of the Helivue Design system. It is specifically engineered to retain your KDSS (Kinetic Dynamic Suspension System), factory air ride, and Class 4 receiver hitch fully intact. No modifications to your suspension or tow setup are required.
How does the tank fill - do I need a separate filler neck?
No separate filler neck is needed. The auxiliary tank uses an OEM split fill point, meaning it connects to your factory filler neck and fills simultaneously alongside your main tank. Just fill up as you normally would and both tanks top off at the same time.
Can I use this tank to transfer fuel to another vehicle?
Yes. The tank features a side-corner fuel pickup specifically designed for this purpose. Using the included fuel pump and transfer switch, you can pump fuel from your auxiliary tank to another vehicle - a handy feature for group overlanding or remote rescue situations.
Is professional installation required, or can I install this myself?
The system is designed for a DIY install with a recommended time of approximately 5 hours. All necessary hardware is included - stainless steel clamps, hardware, and bung - so no additional parts are needed. That said, if you are not comfortable working with fuel systems, professional installation is always a safe option.
Does this tank affect ground clearance or visibility from outside the vehicle?
The Helivue Design auxiliary tank is engineered to tuck above the bumper line, keeping it virtually invisible from the outside and maintaining your 4Runner's high-clearance profile. Factory evap systems remain in place and the overall footprint is minimal.
Thank you for trusting us with your order! This product is shipped directly from the manufacturing warehouse to get to customers all over the U.S. as soon as possible!
While many of our products are prepared and shipped out within 48 hours, some of our items are built to order or require custom pieces that could take 2-6 weeks to prepare before shipping! Please contact us at 888-884-2234 for a delivery ETA if you have a strict timeline.
Thanks!
Omaha Sports & Games Team
Returns & Refunds Policy
Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.
To be eligible for a return, your item must be in the same condition that you received it, unworn or unused, with tags, and in its original packaging. You’ll also need the receipt or proof of purchase. To start a return, you can contact us at service@omahasportsandgames.com.
If your return request is accepted, it will be up to you as the buyer to return the item in its original packaging, unworn and unused. You as the buyer will be responsible for paying the return shipping. We may be able to assist you in scheduling a pickup for return but the payment will still be your responsibility. You can always contact us for any return question at service@omahasportsandgames.com.
All products are subject to a minimum 15% restocking fee based on the quality of the returned product and packaging.
Items opened, tested, used, or any other non-new condition may be eligible for return based on the manufacturer's return policy.
Shipping Damages and Issues
You must inspect your order upon reception and refuse delivery if you see damage. DO NOT sign for delivery if there is apparent damage to the product. If you sign for the delivery and later claim shipping damage, there is very little we can do to help.
If your order does not require signing at delivery and is instead just dropped off at doorstep with damage, contact us immediately with photos of the damaged boxes.
If your item(s) is defective, damaged or if you receive the wrong item, contact us immediately so that we can evaluate the issue and make it right.
Exceptions / non-returnable items
Certain types of items cannot be returned, such as custom products, special orders or personalized items. Please get in touch if you have questions or concerns about your specific item.
Unfortunately, we cannot accept returns on sale items, gift cards, or multiple product bundle discounts.