Navistar International Corp. executives revealed their new strategy for introducing an updated product line with new emissions equipment, in a bid to recapture market share and counter competitors who have capitalized on stalled regulatory approval of Navistar’s own technology.

According to a report by Transport Topics, Navistar said it will introduce a ProStar tractor with a Cummins Inc. 15-liter ISX engine in January, and roll out a 13-liter MaxxForce engine in May, both with selective catalytic reduction, or SCR, technology, using what Navistar calls In Cylinder Technology Plus, or ICT.

“We want to focus on going forward,” Jack Allen, president of Navistar’s North American truck group. “We want to get back into the position of having Navistar tell the Navistar story rather than the competition.”

Allen and colleagues outlined the new approach for Transport Topics in an interview, saying competitors were trying to hurt sales by citing delays in Environmental Protection Agency approval for Navistar’s 13-liter engine using exhaust gas recirculation.

Navistar, which is still selling trucks with its EGR technology using emissions credits and payment of penalties, said last month it was changing its emissions reduction approach to include SCR.

The shift to SCR brought Navistar in line with other truck makers, after years of criticizing that technology approach. Navistar is parent to RV builder Monaco RV LLC.