LISLE, Ill. — Navistar has received certification from the U.S. Environmental Protection Agency (EPA) for its 13-liter heavy-duty engine with selective catalytic reduction (SCR) emissions technology. The engine is certified by EPA at or below the required 0.20 g/bhp-hr NOx.

“EPA certification of our proprietary 13-liter engine with SCR completes our transition to SCR-based technology for our heavy-duty engines,” said Jack Allen, Navistar’s newly appointed executive vice president and chief operating officer. “We’ve reached another milestone in our emissions strategy transition and are on track to deliver our first ProStar units with our SCR-based 13-liter engines at the end of April.”

Allen, 55, had been president of the company’s North America Truck and Parts business since June 2012. A Navistar veteran, he joined the company in 1981 as a design engineer.

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 addition of the ProStar equipped with the 13-liter SCR engine means the company now offers a complete line-up of SCR-based trucks in the class 8 on-highway market.

At last week’s ExpoCam show in Montreal, Navistar announced the re-introduction of its 9900i and 5900 Paystar SBA vocational trucks with the Cummins ISX15.