TerraCair has the quality you're looking for. As the leading urea producer in North America, TerraCair maintains product quality from production to your truck's tank. The leading truck manufacturers depend on TerraCair DEF. You can too!

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Something big is missing from your location. As the producer of TerraCair DEF, Terra Environmental Technologies has made the commitment to supply availability. That means with TerraCair DEF, you have a direct link to the manufacturer. Other DEF suppliers who rely on third party urea sources cannot give their customers the same peace of mind.

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TerraCair's quality team works to assure reliable quantity and supply. With TerraCair DEF, you can rely on our commitment to excellence from production, to delivery, to performance - every single day. Your fleet and customers deserve TerraCair DEF - We have the reliable quality & supply you need!

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Reliable Effective Solutions for Meeting Clean Air Objectives.

Our mission - Terra Environmental Technologies (TET), an indirect wholly-owned CF Industries subsidiary, is committed to our customers in meeting their diesel emissions and clean air objectives. We accomplish this by understanding our customers' needs and adding value to their businesses.

Whether you make, sell, buy or service diesel vehicles, the TET Team can help you reduce your emissions and improve your fuel economy. TerraCair®, our Diesel Exhaust Fluid (DEF) product, works with your Selective Catalytic Reduction (SCR) technology to do just that.

News Updates

Marten Transport selects TerraCair® Ultrapure DEF

February 29, 2012 – Marten Transport, LTD., a premier North American supplier of time and temperature sensitive transportation... read more

The World’s Largest Truckstop® Chooses TerraCair® Ultrapure Diesel Exhaust Fluid

December 6, 2011 – The Iowa 80 TA Truckstop, the World’s Largest Truckstop, located in Walcott, Iowa, has signed... read more

See all recent news articles here