ATI FUEL TANKS AUX42FCBR9 FUEL SAFE 42 GALLON AUXILIARY FUEL TANK/TOOLBOX COMBO

ATI AUX42FCBR9 is a Fuel Safe 42-gallon aluminum auxiliary fuel tank and toolbox combo with a 9" toolbox lid. The Fuel Safe design places the filler and fittings inside a lockable compartment, enhancing security and weather protection while keeping your bed organized and your range extended.

Key Features

• 42-gallon auxiliary capacity with integrated 9" toolbox lid (lockable).
• Fuel Safe enclosure: filler & fittings protected under the toolbox lid.
• .125" aluminum construction, fully baffled; pressure/leak tested; rollover safety vent.
• Designed for auxiliary-to-factory tank use (not a refueling/dispensing tank).
• Supports diesel (with ATI Fuel Shotz kit) and gasoline (top-draw with inline pump) configurations.

Fitment

Universal pickup bed fit for most full-size trucks. Diesel installs typically use ATI’s Fuel Shotz kit to connect into the factory filler neck. Gasoline installs require a top-draw pickup and inline pump into the filler neck per 49 CFR guidance (no bottom gravity feed for gasoline). Always verify bed, rail, and toolbox clearances.

Dimensions & Capacity

• Capacity: 42 gallons
• Overall tank: ~48.5" L x 19" W x 21" H
• Toolbox (interior footprint): ~42" L x 19" W x 9" H
• Note: Welded mounting tabs may add ~1.5" per side; account for cap/vent clearances.

What’s Included

• ATI AUX42FCBR9 Fuel Safe 42-gal auxiliary tank/toolbox combo
• Mounting tabs/hold-downs

Installation kits, hose/pump, gauges, and lockable caps sold separately.

Compliance

Meets ATI’s auxiliary tank guidelines and DOT requirements for auxiliary tanks (diesel via Fuel Shotz to filler neck; gasoline via top-draw with inline pump into filler neck). Check local and state laws before installation.

Installation Notes

• Diesel: Use ATI Fuel Shotz kit to tee into the factory filler neck; the factory tank stays full until the auxiliary tank empties.
• Gasoline: Top-draw pickup with inline pump only; route to filler neck adapter and return/vent per kit guidance.
• Bolt through welded tabs to truck bed; verify lid and bed-rail clearances.

FAQ

Is this tank DOT-approved for refueling?

No—this is an auxiliary tank that feeds your factory tank (diesel via Fuel Shotz; gasoline via top-draw and pump). For dispensing into equipment, choose a DOT refueling tank instead.

What are the exact dimensions?

Plan around ~48.5" (L) x 19" (W) x 21" (H) for the tank and ~42" (L) x 19" (W) x 9" (H) for the toolbox. Add ~1.5" per side for mounting tabs depending on placement.

What makes it “Fuel Safe”?

The filler and fittings sit inside a compartment beneath the lockable toolbox lid, protecting components from weather and tampering.

Do I need wiring or switches for diesel?

With ATI’s Fuel Shotz diesel kit, the system uses the factory filler neck—no wiring or switches are required; your factory gauge moves off “full” when the aux tank is empty.

Can I gravity feed gasoline?

No. Gasoline auxiliary systems must draw from the top of the tank using an inline pump and route into the factory filler neck (no bottom gravity feed).