Sources: Environmental Protection Agency; CP staff
Through a voluntary recall coordinated with the EPA, Cummins Inc. will replace components in selective catalytic reduction-equipped engines powering 2010-15 model year medium- and heavy-duty trucks. SCR catalyst components to be replaced were found to degrade within a few years instead of controlling emissions of nitrogen oxides for a regulatory timetable—10 years or 435,000 miles (heavy-duty vehicles)/185,000 miles (medium-duty).
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