ATI FUEL TANKS AUX42CBRG 42 GALLON RECTANGLE SHAPED AUXILIARY TANK/TOOLBOX COMBO – GASOLINE – NO INSTALL KIT

ATI AUX42CBRG is a gasoline-rated, 42-gallon rectangular auxiliary tank and 6-inch toolbox combo built from .125" aluminum. It’s fully baffled, pressure/leak tested, and designed to integrate with a filler-neck adapter kit (sold separately) for automatic transfer into the factory tank. Meets 49 CFR 393.65 requirements for auxiliary gasoline tanks.

Key Features

• 42-gallon capacity; gasoline-specific construction meeting 49 CFR 393.65.
• Integrated 6"-tall toolbox (separate from fuel cavity) with locking stainless latches and gas-assist shocks.
• Vented cap with rollover protection; pickup and return fittings, 3/8" NPT drain, welded baffles.
• Clean interior; pressure and leak-tested; mounting tabs included.
• Bright aluminum finish; optional black powder coat from select sellers.

Fitment

Universal pickup bed fit for most full-size trucks. Connects to the vehicle’s fuel system using a filler-neck adapter kit matched to the truck make/year (kit not included). Always verify bed/toolbox clearances and local regulations before installation.

Dimensions & Capacity

• Capacity: 42 gallons
• Tank (L × W × H): ~48.5" × 19" × 18"
• Toolbox (L × W × H): ~42" × 19" × 6"
• Notes: 9" toolbox variant exists (AUX42CBRG9) at ~21" tank height; ensure you’re ordering the 6" toolbox model (AUX42CBRG).

What’s Included

• ATI AUX42CBRG 42-gal aluminum auxiliary tank & 6" toolbox combo
• Mounting/hold-down tabs

No install kit included. Add a vehicle-specific filler-neck adapter/hoses to complete the install.

Compliance

Gasoline auxiliary models are built to meet 49 CFR 393.65 for fuel tanks when installed and used as directed.

Installation Notes

• Use the welded tabs to bolt into the bed with appropriate hardware.
• Select the correct filler-neck adapter kit for your truck to enable automatic transfer.
• Confirm toolbox lid clearance and rail height; verify cap and fittings clear bed covers/liners.

FAQ

Does this include the install kit?

No. This listing is “no install kit”. Add a truck-specific filler-neck adapter kit separately to connect the auxiliary tank to the factory tank.

Is it legal for gasoline?

Yes—ATI’s gasoline auxiliary tanks are built to meet 49 CFR 393.65 when installed correctly. Always follow state/local rules.

What are the exact dimensions?

Tank is about 48.5" L × 19" W × 18" H. The toolbox is about 42" L × 19" W × 6" H. Verify your bed/toolbox space before ordering.

What’s the difference between AUX42CBRG and AUX42CBRG9?

Both are 42-gal gas combos. The CBRG uses a 6" toolbox and ~18" tank height, while the CBRG9 uses a 9" toolbox and ~21" tank height.

Is the interior baffled?

Yes. It’s fully baffled to reduce fuel slosh and improve stability.