The largest fuel pack RotoPax makes. Four gallons on the outside of the rig, in a footprint designed to be stacked and mounted rather than rattling around in the bed.
Specifications
| Capacity | 4 Gallon |
| Contents | Gasoline (red — colour-coding is an EPA/CARB requirement) |
| Material | Patented three-layer roto-molded HDPE with a formulated barrier layer |
| Certifications | CARB · EPA · ASTM · NFPA |
| CARB Executive Orders | G-11-044E and G-16-041B (active through 31 Dec 2028) |
| Warranty | 10-year leak-free guarantee |
| Included | ECO pour spout · Flame Mitigation Device (FMD) |
| Made in | USA |
The only roto-molded fuel container CARB will certify
Plenty of gas cans carry a CARB certificate. RotoPax is the only rotationally moulded one — every other certified container is blow- or injection-moulded, a cheaper process with a thinner wall. RotoPax meets CARB's permeability limit through a patented three-layer process with a formulated barrier material built into the wall.
The white tube in the neck is the Flame Mitigation Device — legally required, prevents flame jetting. Removing it voids the warranty.
Mounting
The 4-gallon shares its footprint with the RototraX traction boards and with two interlocked GEN 1 2-gallon cans — so a single mounting location can carry fuel, water and recovery boards in one stack.
Beyond the Standard, DLX and LOX Pack Mounts, dozens of manufacturers build brackets to the RotoPax pattern — including our Heavy-Duty RotoPax Spare Tire Mount, plus Front Runner, Eezi-Awn, Leitner, Axia Alloys, Xtrusion, TrailRax and RockSlide.
Venting — read this before your first trip
Vent at least once a day, and again for every 10°F of temperature change or every 1,000 ft of elevation gain. Failing to vent will deform the container and voids the fuel-container warranty. Store it completely full or completely empty.
Presented by Overland Kitted
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