ATI FUEL TANKS AUX42CBR 42 GALLON AUXILIARY FUEL TANK/TOOLBOX COMBO – 6" TOOLBOX

ATI AUX42CBR combines a 42-gallon aluminum auxiliary fuel tank with a low-profile 6"-tall toolbox to extend range and keep gear secure without dominating bed space. Built from .125" aluminum with welded baffles and mounting tabs, it’s sized to drop into most full-size pickup beds and pair cleanly with Fuel Shotz install kits.

Key Features

• 42-gallon capacity auxiliary tank with integrated chest-style toolbox (6" lid height).
• .125" aluminum, baffled interior, pressure/leak tested, mounting tabs.
• Diesel auxiliary use with Fuel Shotz gravity-feed install kits; gasoline combo sold as AUX42CBRG (same footprint, gas-rated fittings).
• Toolbox interior approx. 42" L x 19" W x 6" H for low-profile bed clearance.

Fitment

Universal pickup bed fit (full-size trucks typical). Verify bed length, rail height, and tie-down locations before ordering. For diesel trucks, select the correct Fuel Shotz kit by make/year during install; for gasoline applications use gas-rated AUX42CBRG and the gasoline install kit.

Dimensions & Capacity

• Capacity: 42 gallons
• Tank (A × B × C): ~18" H × 48.5" L × 19" W
• Toolbox: 42" L × 19" W × 6" H
• Notes: Allow clearance for cap/fittings and mounting tabs; measure bed floor to rail for lid swing.

What’s Included

• ATI AUX42CBR 42-gal auxiliary tank + 6" toolbox combo
• Welded mounting tabs (hardware/kit sold separately)

Install kits, caps, pumps, and gauges sold separately.

Compliance

Diesel auxiliary setups plumb via a Fuel Shotz kit to the OE fill neck. Gasoline versions (AUX42CBRG) are built to meet 49 CFR 393.65 for gasoline auxiliary tanks when used as directed. Always follow local regulations and ATI’s instructions.

Installation Notes

• Select the proper Fuel Shotz kit (Ford/Dodge through 2012 & GM 2011-current; GM ≤2010; RAM 2013-current) as applicable.
• Mount through tabs to the bed; route hose to OE filler per kit instructions; leak/pressure test on completion.

FAQ

What are the exact tank and toolbox dimensions?

The tank body is ~18" (A) × 48.5" (B) × 19" (C). The toolbox measures 42" L × 19" W × 6" H.

Is this for diesel or gasoline?

AUX42CBR is the diesel auxiliary combo used with a Fuel Shotz kit. The gasoline variant is AUX42CBRG (same size, gas-rated fittings).

Do I need a special kit to connect it?

Yes. Use the correct Fuel Shotz auxiliary install kit for your truck (connections are made at the OE filler neck). Part family varies by make/year.

Does the toolbox lid clear most bed rails and covers?

The toolbox is only 6" tall, designed for lower profile clearance. Measure your bed rail height and any cover mechanism to confirm clearance.

Is the tank baffled and leak tested?

Yes. ATI auxiliary tanks are fully baffled and pressure/leak tested prior to shipping.