Product Description
ATI AUX42RG is a 42-gallon, rectangular gasoline auxiliary tank built from .125" aluminum with full internal baffling. It’s DOT-compliant for auxiliary use and engineered to connect to your truck’s factory tank using a filler-neck adapter and an inline pump (install kit sold separately). This SKU is tank only—no install kit included.
Key Features
- .125" aluminum construction, fully baffled; pressure/leak tested and cleaned inside/out.
- Vent fitting with rollover protection, pickup and return fittings, automotive-style filler cap.
- Mounting tabs included; bright aluminum finish.
- Designed to meet DOT fuel tank requirements for auxiliary gasoline tanks (49 CFR 393.65).
Fitment
Universal pickup bed fit for full-size trucks. Plumb into the factory tank via the filler neck using a gasoline install kit (top-pull only) and an inline pump. Not for sale/installation to connect to factory fuel systems in California due to CARB restrictions.
Dimensions & Capacity
- Capacity: 42 gallons
- Length: 48.5"
- Width: 19"
- Height: 12"
- Install notes: Mounting tabs can add ~1.5" each side; fuel cap adds ~2.5" to total height—measure bed/toolbox clearances accordingly.
What’s Included
- AUX42RG 42-gallon aluminum auxiliary gasoline tank
- Welded mounting/hold-down tabs
Install kit, filler-neck adapter, hoses, and inline pump are sold separately.
Compliance
Built to meet DOT auxiliary fuel tank requirements (gasoline). Gasoline systems must pump from the top—gravity feed is not legal for gasoline.
Installation Notes
- Use a 1" filler neck adapter with two 3/8" barbs (supply/return) and an inline electric pump.
- Run a return or vent to avoid check-engine/loose-cap lights on some trucks.
- Follow ATI torque/mounting guidance; verify cap height and tab width before drilling.
FAQ
- Does this include the install kit?
- No—this listing is tank only. Add a gasoline auxiliary install kit (filler-neck adapter, hose/clamps) and an inline fuel pump to complete the system.
- Can I gravity-feed gasoline from this tank?
- No. Gasoline auxiliary systems must pull fuel from the top of the tank with an inline pump; gravity feed is not legal for gasoline.
- What are the exact dimensions?
- Overall: ~48.5" L x 19" W x 12" H. Allow ~1.5" per side for tabs and ~2.5" additional height for the cap.
- Is it baffled and pressure tested?
- Yes. Tanks are fully baffled and undergo visual, pressure, and leak detection testing before shipping.
- Is this available in California?
- Gasoline auxiliary tanks plumbed to factory systems are not offered for CA due to CARB restrictions.
