Navistar announced it is shipping to customers its first 300 International ProStar+ Class 8 on-highway tractors equipped with the Cummins ISX15, ahead of schedule.

The Navistar team has worked side-by-side with Cummins engineers to bring the ProStar+ with ISX15 to market. Since announcing its shift to SCR-based clean engine technology last summer, Navistar has completed rigorous testing and analysis in both its captive and customer field test units, logging hundreds of thousands of driving miles in real-world conditions.

The International ProStar+ with MaxxForce 13 and Cummins Emission Solutions SCR-based aftertreatment system is on-track for initial pilot production in March 2013 with regular production to begin in April 2013.

The remaining line-up of heavy-duty truck models will transition to SCR-based clean engine technology in a phased launch throughout 2013 based on volume and customer demand.

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