LISLE, Ill. – Navistar announced it will be adding selective catalytic reduction (SCR) aftertreatment to its MaxxForce 9 and 10 engines, completing its mid-range engine transition to SCR.
The company already offered the Cummins ISB 6.7 engine in its International DuraStar. The MaxxForce 9 and 10 will be offered in DuraStar and WorkStar vehicles.
“Our medium-duty transition to SCR started strong with our DuraStar with Cummins ISB6.7 and we have high expectations for this chassis/engine combination as we see the construction market continue to rebound,” said Bill Kozek, President, North America Truck and Parts, Navistar. “We also know a number of our customers require more horsepower and torque and we’re pleased to offer these customers an expanded engine choice by adding SCR to our 9-liter and 10-liter engines.”
Meanwhile, Navistar is also making an Allison Optimized 1000 Series transmission with an optional sixth speed available on its International TerraStar. Navistar says the sixth speed will provide improved fuel economy and lower engine noise.
Also new to the TerraStar is a refined front suspension with redesigned front spring and bumper, which the company says offers a smoother ride over rough terrain.
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