2024-Current Lexus GX550 Auxiliary Fuel Tank System 18 Gallon
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2024-Current Lexus GX550 Auxiliary Fuel Tank System 18 Gallon
Description
The Helivue Design 18 Gallon Auxiliary Fuel Tank System is engineered specifically for the 2024 and newer Lexus GX550, giving commuters and hardcore overlanders the extended range they need without sacrificing any factory hardware. Built from 1/8" 5052 aluminum in Colorado, this tank is lightweight, high-clearance, and designed to tuck above the bumper line so it stays nearly invisible. It installs directly onto existing frame locations with minimal modification, preserving your KDSS, factory air ride, and Class 4 receiver hitch exactly as they came from the factory.
Fueling is seamless - the auxiliary tank fills simultaneously with your main tank through the factory filler neck, so there's no extra step at the pump. A programmable fuel transfer switch, quality fuel pump, stainless steel fuel level sender, and all necessary hardware are included so you have everything to complete the install. This system has been tested extensively from 5,000 to 13,000 feet of elevation under real overland conditions, and it shows.
Key Features
- 18-Gallon Capacity: Adds substantial range for long-haul travel, remote off-road trips, or daily commuting in areas with limited fuel access.
- 1/8" 5052 Aluminum Construction: Thicker gauge aluminum with superior corrosion resistance keeps the tank durable and lightweight for years of hard use.
- Made in the USA: 100% designed, built, and tested in Colorado - no outsourced manufacturing or compromises on quality control.
- Simultaneous Dual-Tank Fill: Fills through the OEM filler neck at the same time as your factory tank - no separate fill point needed.
- Preserves Factory Systems: Compatible with KDSS, factory air ride, and Class 4 receiver hitch - nothing gets removed or permanently modified.
- High-Clearance, Low-Profile Design: Tucks above the bumper line for an almost invisible installation that doesn't compromise ground clearance.
- Reduced Leak Paths: Simplified hose routing and fewer connections mean fewer potential failure points in the field.
- Side Corner Fuel Pickup: Allows you to use the auxiliary tank to transfer fuel to another vehicle if needed - a practical feature for remote travel.
- Bolt-In Installation: Uses existing frame mounting locations with almost no modification required - recommended install time is approximately 5 hours.
- Complete Kit Included: Comes with a programmable fuel transfer switch, fuel level gauge, quality fuel pump, stainless steel fuel level sender, stainless steel clamps, stainless steel 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 / fuel level gauge
- Quality fuel pump
- Stainless steel fuel level sender
- Stainless steel clamps
- Stainless steel hardware
- Bung
Why You'll Love It
The Helivue Design GX550 auxiliary fuel system is built for people who push their vehicles hard and rely on them in situations where running out of fuel isn't an option. It's been beaten, bashed, and driven over rough terrain at high elevation without failure - this is a tank that earns its reputation in the real world, not just on a spec sheet. The bolt-in design means you're not cutting corners or voiding factory systems, and the clean above-bumper fitment keeps your rig looking purpose-built rather than cobbled together. Manufactured entirely in the USA, it reflects the kind of craftsmanship that overlanders and off-road enthusiasts have come to trust for demanding builds. Whether you're crossing remote stretches of the American West or simply want the peace of mind that comes with 18 extra gallons on board, this system delivers confidence mile after mile.
Product Specifications
View Product Specs
| Brand | Helivue Design |
|---|---|
| Tank Type | Auxiliary |
| Capacity | 18 Gallons |
| Weight | 25 Pounds |
| Material | 1/8" 5052 Aluminum |
| Fill Point | OEM Split (fills through factory filler neck) |
| Fuel Type | Gasoline |
| Spare Tire Relocation Required | Yes |
| Recommended Install Time | 5 Hours |
| Compatibility | 2024-Current Lexus GX550 |
| Country of Manufacture | USA (Colorado) |
FAQ
Does installing this auxiliary tank require cutting or permanently modifying my GX550?
Almost no modification is required. The tank bolts into existing frame locations on the GX550, meaning no cutting or drilling into the chassis. The install is designed to be reversible and preserves all factory systems including KDSS, factory air ride, and the Class 4 receiver hitch.
Will this tank work with my GX550's KDSS and factory air suspension?
Yes - one of the key design goals of this system is full compatibility with the GX550's factory KDSS (Kinetic Dynamic Suspension System) and air ride. Neither system needs to be removed or disabled to fit the auxiliary tank.
How does the tank fill - do I need a separate fill point?
No separate fill point is needed. The auxiliary tank fills simultaneously with your factory tank through the OEM filler neck. Just fill up as you normally would and both tanks fill at the same time.
How do I transfer fuel from the auxiliary tank to the main tank?
The included programmable fuel transfer switch and quality fuel pump allow you to transfer fuel from the auxiliary tank to the main tank on demand. The fuel level gauge lets you monitor how much is in the auxiliary tank at any time.
Does this system require my spare tire to be relocated?
Yes, spare tire relocation is required as part of this installation. Plan for that as part of your build when ordering this system.
How long does installation take?
Helivue Design recommends budgeting approximately 5 hours for installation. The bolt-in design and complete hardware kit are intended to make the process straightforward for someone with basic mechanical experience.
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.
| Specification name | Specification Value |
|---|---|
| Color pattern | Black |
| Item condition | New |
| Manufacturer type | Aftermarket |