The QSK50 Tier 4 builds upon its legendary robustness with enhanced engine power and improved reliability while in compliance with EPA Tier 4 and EU Stage V emissions regulations.
If you need assistance with selecting the right replacement parts for your engine, please contact our ONLINE SERVICE to get fast customer support.
For us to provide you with the correct information, please have your Cummins Engine Part Number or Engine Serial Number ready, so that we can give you the best price possible along with our expertise.
TThe QSK50 brings together two powerful technologies: the Cummins high pressure Modular Common Rail Fuel System (MCRS) and Selective Catalytic Reduction (SCR) System. The MCRS fuel system provides precise control of the fuel ejection event that results in lower noise, vibration and smoke, and optimized fuel economy. By using SCR technology, we’re able to protect engine performance and power density, while improving fuel economy over previous engine models, without increasing heat rejection or the engine footprint, equating to best in class cost of production (COP). These capabilities are available in a wide range of heavy-duty front-end loaders, excavators, and haul trucks, with engine power outputs from 1500 hp to 2000 hp (1119-1491 kW). Whatever you need, the QSK50 delivers.
Cummins NT855 Engine Ratings
Engine model
Advertised HP (kW) @ RPM
Peak torque LB - FT (N·M) @ RPM
QSK50 2000
2000 (1491) @ 1900
5805 (7871) @ 1500
QSK50 1675
1675 (1249) @ 1800
5375 (7288) @ 1500
QSK50 1600
1600 (1193) @ 1800
5044 (6839) @ 1500
QSK50 1600
1600 (1193) @ 1800
5041 (6834) @ 1500
QSK50 1575
1575 (1175) @ 1900
5450 (7369) @ 1300
QSK50 1500
1500 (1119) @ 1900
5044 (6839) @ 1400
Small Tips for Quick Service:
If you need assistance with selecting the right replacement parts for your engine, please contact our ONLINE SERVICE to get fast customer support.
For us to provide you with the correct information, please have your Cummins Engine Part Number or Engine Serial Number ready, so that we can give you the best price possible along with our expertise.
TThe QSK50 brings together two powerful technologies: the Cummins high pressure Modular Common Rail Fuel System (MCRS) and Selective Catalytic Reduction (SCR) System. The MCRS fuel system provides precise control of the fuel ejection event that results in lower noise, vibration and smoke, and optimized fuel economy. By using SCR technology, we’re able to protect engine performance and power density, while improving fuel economy over previous engine models, without increasing heat rejection or the engine footprint, equating to best in class cost of production (COP). These capabilities are available in a wide range of heavy-duty front-end loaders, excavators, and haul trucks, with engine power outputs from 1500 hp to 2000 hp (1119-1491 kW). Whatever you need, the QSK50 delivers.
