ATI FUEL TANKS AUX46RG 46 RECTANGLE SHAPED AUXILIARY KIT – GASOLINE – NO INSTALL KIT

ATI AUX46RG is a 46-gallon rectangle gasoline auxiliary tank built from .125" diamond-plate aluminum with full internal baffles. It’s designed to connect into your factory tank through the filler neck using a gasoline auxiliary install kit (sold separately). Standard features include a vent fitting with rollover protection, fuel pickup and return fittings, automotive-style cap, and a 3/8" NPT drain. Tanks are pressure/leak tested and ship clean with welded mounting tabs.

Key Features

• .125" aluminum construction with fully welded baffles.
• Vent fitting with rollover protection; fuel pickup and return fittings.
• Automotive-style filler cap; 3/8" NPT drain; welded mounting tabs.
• Meets requirements in 49 CFR 393.65 for gasoline auxiliary tanks.
• Installation kit not included—order hose/clamp kit, filler-neck adapter, and gauge as desired.

Fitment

Universal pickup-bed fit. Designed to plumb into the OE tank via the filler neck with an auxiliary install kit. Verify bed dimensions and mounting locations before purchase.

Dimensions & Capacity

• Capacity: 46 gallons
• Overall length: 57"
• Overall width: 12"
• Overall height: 16.5" body height (some listings round to 17")
• Notes: Allow additional clearance for cap and mounting tabs.

What’s Included

• ATI AUX46RG 46-gallon aluminum auxiliary tank
• Standard vented cap, pickup/return fittings, 3/8" NPT drain, welded tabs

Install kit, filler-neck adapter, hose/clamp kit, and gauges are sold separately.

Compliance

Gasoline auxiliary models are built to meet Title 49 CFR 393.65 requirements when properly installed. Check local/state regulations.

FAQ

Does this include the auxiliary install kit?

No. This listing is the tank only. Order the gasoline hose & clamp kit and 1" filler-neck adapter separately.

How does the AUX46RG connect to my truck?

With an auxiliary kit that tees into the factory filler neck. The kit transfers fuel from the aux tank into the OE tank as you drive.

What are the exact dimensions?

Plan for 57" L x 12" W x 16.5–17" H. Some retailers list 16.5" body height; others round to 17". Leave clearance for the cap and mounting tabs.

Is the interior baffled?

Yes—fully welded baffles reduce slosh and improve stability.

Is it DOT “refueling” approved?

No—this is a gasoline auxiliary tank (meets 49 CFR 393.65). If you need to dispense fuel directly to equipment, see ATI refueling (transfer) tanks built under DOT special permits.