Direct: (503) 987-4002
Main: (503) 987-4000




Modern diesel trucks equipped with Selective Catalytic Reduction (SCR) systems require Diesel Exhaust Fluid to run cleanly and legally — and running low on DEF in a remote area can shut your truck down just as effectively as running out of fuel. The RotopaX 2 Gallon Diesel Exhaust Fluid Container GEN 2 gives you a mount-ready DEF reserve that fits into your existing RotopaX setup without any additional hardware or brackets. Two gallons of DEF on board covers a meaningful amount of miles and gives you the buffer you need when DEF availability is uncertain.
The GEN 2 brings the same updated design as the rest of the GEN 2 lineup — same 2-gallon capacity and overall dimensions as the original, but with a simplified construction that eliminates the complicated twisting bottom mechanism. The result is a cleaner, more straightforward container that is easier to work with in the field. Construction is the same thick-walled roto-molded build used throughout the RotopaX system, with a leak-proof cap assembly that holds up to vibration and rough terrain.
It mounts to the full RotopaX system using Standard, DLX, and LOX pack mounts and can be stacked using the 1, 2, and 4 Gallon Extension. The slim 3-inch depth profile keeps it flush against bed racks, roof racks, spare tire carriers, tailgates, and MOLLE panels. One critical note for DEF containers: DEF is corrosive to many materials and even trace contamination from other fluids can damage your SCR system — this container should be used exclusively for DEF and never shared with fuel, water, or any other liquid.
We ship throughout the United States. Most in-stock items leave our shop within 1–3 business days. Made-to-order, special-order, drop-shipped, freight, and oversized products may require additional processing or lead time. Any known special timing or availability information will be noted on the product page when applicable.
Orders placed outside of our normal business hours will be processed as soon as possible once our team returns during regular operating hours, Monday–Friday. Orders placed over the weekend or on a holiday will begin processing the next business day.
Eligible items may be considered for return within 30 days of delivery. All returns require prior authorization from PAD Overland. Return requests are subject to our return policy as well as any applicable manufacturer or supplier return requirements.
Approved customer-requested returns are subject to a 35% PAD Overland restocking fee, plus any additional return-related fees imposed by the manufacturer, supplier, or distributor.
Many products sold by PAD Overland include a manufacturer warranty. Warranty claims are subject to the individual manufacturer’s warranty terms and procedures. We are happy to help facilitate the process when possible. Please contact us with your order number, photos, and a description of the issue.
Questions about fitment, shipping, return eligibility, or a special-order product? Please contact us before placing your order. Our team is happy to help make sure you are ordering the correct product for your vehicle.
Thanks for subscribing!
This email has been registered!
Please read our full Terms of Service and Refund Policy.