Cummins brings more than a decade of experience in building SCR systems and is on the forefront of engine technology using DEF. In addition to SCR technology, Cummins designs, manufactures and sells genuine Fleetguard® products to support DEF needs on Cummins engines. For more information about Fleetguard products, visit the Cummins Filtration website.
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.