Additional information
| Size | 60 Gallon |
|---|
ATI L-Shaped Auxiliary Fuel Tank
$855.88
ATI Wedge Fuel Transfer Tank
Original price was: $848.53.$789.00Current price is: $789.00.
ATI 60-Gallon Wedge Auxiliary Diesel Fuel Tank
60-Gallon Diesel Range Extension for 5th Wheel Setups
The ATI Wedge Auxiliary Fuel Tank is engineered to seamlessly extend your truck’s driving range without compromising 5th wheel clearance or rear visibility. Crafted from premium aluminum, this tank delivers the fuel capacity you need for long hauls while maintaining a low-profile, angled design that integrates cleanly with flatbeds and pickups. It’s a straightforward, high-quality solution for maximizing uptime on the road.
- FREE Pre-offer Spec Review -- We verify your truck and hitch configuration before shipping
- Free Shipping -- LTL freight delivery to your site included
Original price was: $855.88.$849.00Current price is: $849.00.
🔒 100% Secure Checkout
Free Returns 30-day hassle-free returns.
Free Delivery Every order, every time.
Ships in 3–5 Days Heavy-duty crating included.
4.9/5 Stars 2,400+ verified reviews.
In the box
- ATI 60-gallon aluminum wedge auxiliary tank
- Integrated fill neck assembly
60-Gallon Diesel Range Extension for 5th Wheel Setups
The ATI Wedge Auxiliary Fuel Tank is a field-proven 60-gallon diesel tank built-to-spec for flatbeds and pickups running a 5th wheel hitch. The 45-degree tailgate-side slope maintains full 5th wheel available while keeping your fuel level visible at a glance. At 56 inches long by 20 inches wide by 18 inches high, it maximizes bed capacity without sacrificing maneuverability. Pairs with the ATI Fuel Shotz install kit to feed your factory tank automatically — your factory gauge stays on full until the auxiliary tank runs dry. Ships free. Pay as low as $71/month with Affirm.
FREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORTFREE SHIPPING30-DAY RETURNSEXPERT SUPPORT
Aluminum Construction
45-Degree Wedge Slope
5th Wheel Compatible
Fuel Shotz Ready
60 Gallon
Fuel Capacity
56" x 20" x 18"
Tank Dimensions
45°
Tailgate Side Angle
Verified Fitment Before Your Tank Ships
The worst auxiliary tank purchase is the one that arrives and doesn't clear your 5th wheel hitch — wasted money and a stalled truck. At Tank Vault, we verify compliance requirements for your state and application before the order ships. The ATI Wedge's 45-degree tailgate-side slope is built-to-spec for flatbeds and pickups running a 5th wheel, and we confirm your truck configuration matches before processing. This 60-gallon field-proven aluminum tank connects through your factory filler neck using the ATI Fuel Shotz system — no fuel line cutting, no return line plumbing. Your factory gauge stays on full until the auxiliary tank is empty. We make sure this is the correct tank for your setup before it leaves our warehouse.
Factory Filler Connection Eliminates Complex Plumbing
Most auxiliary fuel tanks require cutting into your factory fuel lines or plumbing return lines — that means a mechanic, downtime, and potential warranty issues on a newer truck. The ATI Wedge tank works differently. It connects directly into your factory tank through the factory filler neck using the ATI Fuel Shotz diesel install kit, available as an add-on. The entire installation takes less than an hour. No fuel line modifications, no return line splicing, no check valves to install. Your factory fuel gauge stays pinned on full while the auxiliary tank feeds into the main tank. When the auxiliary tank is empty, the gauge drops — simple, readable, and industrial-grade in its simplicity.
60-Gallon Capacity in a 5th Wheel-Friendly Footprint
Fifty-six inches long, twenty inches wide, eighteen inches high — the ATI Wedge packs 60 gallons into a compact footprint that fits flatbeds and pickup beds without sacrificing 5th wheel available. The 45-degree tailgate-side slope is the key design element: it angles away from the hitch, giving you full turning radius and coupling access that a square-profile auxiliary tank would block. The fill neck adds 2.5 inches to the top, and the mounting tabs add 1.5 inches to the side and front — plan your bed space accordingly. This is a field-proven aluminum tank spec'd for long-haul drivers and job-site crews who need extended range without giving up their hitch.
Compatibility Check
Verify these measurements against your truck bed before ordering.
- Truck bed accommodates 56-inch tank length plus 1.5-inch mounting tab overhang
- Flatbed or pickup configured with a 5th wheel hitch
- Available space allows for 20-inch tank width plus 1.5-inch side mounting tab
Applications
Built for operators who need extended range without sacrificing 5th wheel functionality.
Long-Haul Towing
Flatbed Fleet Operations
Agricultural Transport
Full specifications
At a glance
- Dimensions
- 20 inches
- Warranty
- See product page
Full specifications11 data points across 4 categories
Dimensions
| Capacity | 60 Gallon |
|---|---|
| Length | 56 inches |
| Width | 20 inches |
| Height | 18 inches |
| Fill Neck Height Addition | 2.5 inches |
| Mounting Tab Overhang | 1.5 inches to side and front |
Power & Performance
| Fuel Type | Diesel |
|---|---|
| Connection Method | Factory filler neck via ATI Fuel Shotz system |
Materials
| Construction | Aluminum |
|---|
Compliance & Warranty
| Installation Kit | ATI Fuel Shotz (available as add-on) |
|---|---|
| Warranty | See product page |
The Tank Vault Promise
Every tank we sell is vetted, documented, and backed by real support.
Free Compliance DocumentationAll eligible tank orders ship with manufacturer documentation — no chasing the vendor after delivery.
Free ShippingLTL freight delivery to your site. Call for liftgate or job-site delivery options.
30-Day Hassle-Free ReturnsUninstalled, original packaging — contact us immediately if there's delivery damage.
Frequently Asked Questions
The ATI Wedge connects through your factory filler neck using the ATI Fuel Shotz diesel install kit, sold separately. No cutting into factory fuel lines or return lines is required. The system keeps your factory tank full while the auxiliary tank drains. When the auxiliary tank is empty, your factory fuel gauge drops off full. This is a diesel-only system — confirm your truck runs diesel before ordering.
Yes. The ATI Wedge is designed specifically for flatbeds and pickups running a 5th wheel. The 45-degree slope on the tailgate side angles the tank away from the hitch, maintaining full coupling and turning available. The tank dimensions are 56 inches long by 20 inches wide by 18 inches high, with the fill neck adding 2.5 inches to the top and mounting tabs adding 1.5 inches to the side and front. Confirm your bed measurements before ordering.
No. The ATI Fuel Shotz diesel install kit is sold separately as an add-on. The tank is designed for use with this specific system — it connects the auxiliary tank to your factory tank via the factory filler neck. The kit installs in under an hour with no fuel line modifications required. Add the Fuel Shotz kit to your order if you don't already have one.
Tank Vault ships free on all orders via LTL freight. Lead times vary by inventory and destination. Contact us with your delivery zip code and required delivery date, and we will confirm availability before you order. If you have a job-site deadline or specific delivery window, let us know — we coordinate freight to your site, including liftgate delivery options.
No. The ATI Wedge Auxiliary Fuel Tank and the ATI Fuel Shotz system are designed for diesel fuel only. Using this tank with gasoline is not recommended and may create safety hazards. If you need a gasoline auxiliary tank, contact Tank Vault and we will point you to the correct product for your application.
Tank Vault offers a 30-day hassle-free return on all orders. The tank must be uninstalled and in original packaging. Contact us immediately if the tank arrives damaged — we resolve it with no runaround. If you realize the tank is the wrong size or configuration for your truck, reach out before installing. Installed tanks cannot be returned.
The Tank Vault Promise
Every tank we sell is vetted, documented, and backed by real support.
Free Compliance Documentation
All eligible tank orders ship with manufacturer documentation — no chasing the vendor after delivery.
Free Shipping
LTL freight delivery to your site. Call for liftgate or job-site delivery options.
30-Day Hassle-Free Returns
Uninstalled, original packaging — contact us immediately if there's delivery damage.
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About aluminum tank industries Fuel Transfer Tanks
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