HUNTSVILLE, AL – Navistar Inc. (Navistar) announced the start of production on the new International® S13 Integrated Powertrain at the company’s Huntsville, Alabama, production facility. T he International S13 Integrated Powertrain—composed of the S13 Engine, T14 Transmission, and Dual Stage Aftertreatment system—marks the final combustion product platform that Navistar will develop as the company transitions towards zero-emissions vehicles. […]