LISLE, Ill., April 29, 2013 /PRNewswire/ -- Navistar, Inc. announced today that it has started shipping—ahead of schedule—its first International^® ProStar^® units powered by the company's SCR-based MaxxForce 13 engine. The first units began shipping last Friday, April 26, from truck manufacturing plants in Escobedo, Mexico and Springfield, Ohio. Earlier in the month, the company received certification for the SCR-based 13-liter engine from the U.S. Environmental Protection Agency (EPA) and California Air Resources Board (CARB).

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"Delivering our 13-liter engine ahead of schedule is another important milestone for Navistar and completes our transition to SCR-based heavy-duty engine offerings," said Troy Clarke, Navistar president and chief executive officer. "We continue to receive great customer feedback on the refined 13-liter engines we're delivering today. And, customers will continue to see outstanding levels of quality, reliability and uptime with our 13-liter engine combined with the proven Cummins SCR aftertreatment system."

Navistar introduced its first SCR-based commercial trucks for the U.S. and Canadian markets in December 2012 with the launch of the International^® ProStar^® with the Cummins ISX 15-liter engine. The remaining line-up of International heavy-duty truck models will transition to SCR-based clean engine technology in a phased launch in the coming months based on volume and customer demand.