Diesel Exhaust Fluid (DEF) - The Facts About the Fluid.

Diesel Exhaust Fluid (DEF), one of the key elements involved in the SCR process, is a solution of purified water and 32.5% automotive-grade urea.  When combined with the heat of the exhaust stream and the SCR catalyst, DEF helps convert NOx into harmless nitrogen and water vapor. DEF is non-toxic and non-flammable and it will not harm people, animals, equipment or the environment when handled properly.

Diesel Exhaust Fluid is not new to Cummins. We have built over 420,000 SCR engines to date, and Cummins Emission Solutions has built and shipped over 965,000 SCR systems.  In addition, Cummins Filtration has a DEF product available for purchase.

For more information about Cummins Filtration's Fleetguard Diesel Exhaust Fluid, see our brochure. Please visit Cummins Filtration's DEF page for additional information regarding Fleetguard Diesel Exhaust Fluid.

Cummins Filtration also offers an online DEF calculator to estimate your annual DEF usage, a training video, and an extensive Q&A document.