Diesel Exhaust Fluid
ISO 22241 certified Diesel Exhaust Fluid (DEF) for Selective Catalytic Reduction (SCR) systems. Available in bulk, 55 gallon drums, and 2.5 gallon cases with reliable 24/7/365 supply.
DEF is composed of 32.5% automotive grade urea and 67.5% de-ionized water, injected into hot exhaust gas to convert NOx emissions into harmless nitrogen and water vapor.
Powered by Musket Corporation
Producing DEF since 2014 with best-in-class QA/QC procedures
ISO 22241 Certified
Meets all quality standards for automotive-grade urea solution
API Certified
American Petroleum Institute certified for quality assurance
24/7/365 Supply
Reliable supply chain with flexible delivery scheduling
32.5% Urea Solution
Precise formulation for optimal SCR system performance
Free Local Bulk Delivery
200 gallon minimum to all Chicagoland & Northern Indiana locations
Free Full Truck Loads
5,000 gallon loads delivered free within 30 miles of all terminal locations
Nationwide DEF Supply Network
Musket Corporation operates DEF terminals across the United States, ensuring reliable supply and reduced logistics costs.
DEF Terminal Locations
Available Package Sizes
We stock DEF in multiple package sizes to meet your operational needs, from bulk tanker delivery to retail-ready cases.
Bulk DEF
Bulk delivery for high-volume operations. Available via tanker truck with flexible scheduling and 24/7/365 availability.
- Full tanker loads (5,000 gal)
- Partial loads (200 gal min)
- On-site storage solutions
Fleets, truck stops, large operations
55 Gallon Drums
Convenient drum packaging for medium-volume users. Easy to store and dispense with drum pumps.
- 55 gallon drums
- Pallet quantities
- Drum pump compatible
Service centers, smaller fleets
2.5 Gallon Cases
Retail-ready cases for resale or small volume use. Perfect for auto dealerships and convenience stores.
- 2.5 gallon jugs
- Case quantities
- Retail display ready
Retail, dealerships, small users
Why DEF Matters
Since 2010, diesel engine manufacturers have relied on Selective Catalytic Reduction (SCR) technology to reduce nitrous oxide (NOx) emissions in response to the EPA's Clean Air Act requirements.
SCR systems inject DEF into hot exhaust gas, triggering a chemical reaction that converts harmful NOx emissions into nitrogen and water vapor, both naturally occurring and harmless gases.
Using quality DEF that meets ISO 22241 standards is critical for proper SCR system operation, fuel efficiency, and avoiding costly engine derates or repairs.
DEF Specifications
DEF Dispensing Equipment
We offer complete DEF pumping equipment and accessories for totes, drums, and bulk storage. All equipment is designed specifically for DEF compatibility to ensure proper handling and dispensing.
- Tote pumping systems for 275/330 gallon IBC containers
- Electric, air-operated, and hand pump configurations
- DEF-compatible hose reels, meters, and nozzles
- Roth double-wall tank packages for bulk storage
Ready to Order DEF?
Contact us for pricing on bulk DEF delivery, drum quantities, or case orders. We offer competitive pricing and flexible delivery schedules.