RotopaX 2 Gallon DEF Container

Key Features

• 2.0 US gallon capacity — mount-ready DEF reserve for diesel trucks equipped with SCR emissions systems
• Interlocking bottom design allows this container to combine at the base with any other 2-gallon RotopaX container to create a combined 4-gallon unit in the footprint of a standard 4-gallon pack
• Key difference from the GEN 2: the original retains the interlocking bottom; the GEN 2 has a simplified flat bottom without the interlock feature
• Thick-walled roto-molded construction for durable, leak-proof performance on rough terrain
• Leak-proof cap assembly and gasket sealing holds up to vibration and rough terrain
• Slim 3-inch depth profile mounts flush to bed racks, roof racks, spare tire carriers, tailgates, MOLLE panels, and more
• Compatible with all RotopaX mounting systems — Standard, DLX, and LOX pack mounts (sold separately)
• Stackable using the 1, 2, and 4 Gallon Extension for added capacity on a single mount point (sold separately)
• Spout included
• 10-year leak-free warranty
• Made in the USA

Dimensions

• Height: 18"
• Width: 14"
• Depth: 3"

What's Included

• 2 Gallon Diesel Exhaust Fluid Container (original / GEN 1)
• Spout and cap assembly
• Mounting kit sold separately

Important Notes

• For Diesel Exhaust Fluid (DEF) use only — do not use with fuel, water, or any other liquid
• DEF is corrosive to many materials and even trace contamination from other fluids can damage your vehicle's SCR system — dedicate this container exclusively to DEF use
• Interlocking with another 2-gallon container requires compatible 2-gallon RotopaX packs — gasoline, diesel, water, or storage
• Container only — mounting kit sold separately
• Stacking requires the 1, 2, and 4 Gallon Extension (sold separately)
• Roll Bar Mount required for round tube installations such as roll cages or UTV bars
• Rinse container thoroughly and allow to dry completely before first use
• Returns accepted within 30 days if unused and in original packaging

Shipping

We ship nationwide and internationally. Most in-stock items leave our shop within 1–3 business days. Made-to-order and oversized parts may require additional lead time; any special timing will be noted on the product page.

Order Processing

If an order is placed outside of our normal business hours (Monday–Friday), we will process it as soon as possible once our team is back in the shop during regular operating hours. Weekend orders will be handled the next business day.

Tracking & Delivery

• You'll receive a tracking email as soon as your order ships.
• We cannot ship to PO Boxes for oversized or freight items.
• Signature may be required for high-value shipments.

Freight & Oversize Items

• Large/oversized products (bumpers, racks, etc.) ship via LTL freight.
• Please inspect your delivery at arrival. Note any damage on the carrier’s paperwork and take photos before signing—this is required to file a claim.
• Residential freight includes curbside delivery; inside delivery/appointments may incur additional fees.

International Orders

• Duties, taxes, and import fees are the buyer’s responsibility and are not included at checkout.
• Some products may have export restrictions or carrier limits.

Order Changes & Cancellations

• Requests must be made within 24 hours of purchase when possible.
• Custom or built-to-order items may not be cancellable once production begins.

Returns & Exchanges

We want you stoked on your gear. Eligible items may be returned within 30 days of delivery for a refund or exchange.

Eligibility

• Items must be new, unused, uninstalled, and in original packaging with all hardware.
• Buyer is responsible for return shipping unless the return is due to our error or a confirmed defect.
• A restocking fee (typically 10–20%) may apply to non-defective returns to cover inspection, repackaging, and processing.

Non-Returnable Items

• Installed/used items, custom or made-to-order products, electrical/electronic components, clearance/“garage sale” items, and gift cards.

How to Start a Return

1. Log in to your account and open the order, or contact us with your order number.
2. We’ll issue return instructions and an RMA if approved. Returns without RMA may be refused.
3. Pack securely; include all parts and paperwork. We recommend insured, trackable shipping.

Refunds

• Once received and inspected, approved refunds are issued to the original payment method within 3–5 business days.
• Original shipping charges are non-refundable (except in cases of our error or a confirmed defect).

Damaged, Defective, or Incorrect Items

• Please contact us within 7 days of delivery with photos of the product, packaging, and shipping label.
• For freight damage, ensure notes are made with the carrier at delivery and take photos before signing.

Warranty

Many products include a manufacturer warranty. We’re happy to help facilitate claims—reach out with your order number, photos, and a description of the issue.

Questions about shipping or returns? Get in touch—our team is here to help you get trail-ready.