MAXXFORCE 15
To succeed in a competitive business, you need an engine and an organization behind it that are always performing and working for you. Navistar’s MaxxForce® Big Bore engines have revolutionized how the world looks at Class 8 commercial diesels. Designed specifically for International Trucks, MaxxForce 15 is built on a proven block and crank shaft combined with the fuel and air systems of the MaxxForce Advanced EGR system. This combination delivers unprecedented hauling power with the convenience of a hassle-free emission solution.
MAXXFORCE 15 / 435-550 HP 1,550-1,850 lb. Torque
Built from a proven block and crank shaft with billions of miles of real-world experience. Available with up to 550 hp and 1,850 lb.-ft. of torque, MaxxForce 15 is the most powerful engine built by International®. Peak torque is achieved at 1,000 rpm and holds steady to 1,200 rpm. This reduces gear-shifting needs uphill and allows for shifting at lower speeds when accelerating. Fewer electrical connections increase system reliability. Premium cam and rolling element valve train system reduces friction and operational load to maintain peak efficiency across the power band. Interstage cooling between the turbos increases air density to maintain peak power as speeds increase. Premium foam-molded wire harness secures wiring and connections for increased reliability and durability. MaxxForce Advanced EGR reduces NOx in-cylinder without the use of liquid urea or additional maintenance.
MAXXFORCE 15 Engine Specs
| Engine Type | Diesel, 4-Cycle |
| Configuration | Inline 6-Cylinder |
| Displacement | 15.21L (928.17 cu. in.) |
| Bore / Stroke | 5.4 in & 6.75 in (137mm & 171mm) |
| Comp. Ratio | 16.0:1 |
| Combustion | Direct Injection |
