Navistar’s MaxxForce 15 diesel is in production and initially available in its International PayStar 5900 series. It will go in highway models later this year.

Navistar’s MaxxForce 15 diesel is in production and initially available in its International PayStar 5900 series. It will go in highway models later this year. The 15-liter engine uses a block, crankshaft and other “iron” parts from the C15 formerly built by Caterpillar, Navistar’s truck partner, along with Navistar’s own electronics, fuel injection and air management systems. Its ratings go to 550 horsepower and 1,850 pounds-feet.
Navistar International WorkStar Hybrid 4x4 is designed for medium-heavy on/off-road use.
MaxxForce 11 and MaxxForce 13 big boreengines are engineered specifically for International Class 8 trucks using compacted-graphite iron (CG Iron) technology for a lightweight block. International developed proven base engineering from its collaboration partner, MAN, in Germany, for U.S. EPA emissions with high pressure common rail fuel injection, twin series turbochargers, exhaust-gas recircul...