Cummins QSX15 Tier 4 Final Engine

The Cummins QSX15 Tier 4 Final Engine is a high-performance diesel engine engineered for heavy-duty off-highway applications. This 15-liter, inline 6-cylinder engine delivers power outputs ranging from 450 to 675 horsepower and torque from 1650 to 2050 lb-ft, making it ideal for large excavators, wheel loaders, graders, rock drills, and compressors.

Key features include:

• Advanced Technology: Equipped with dual overhead camshafts and a high-pressure fuel injection system (XPI) capable of over 1,900 bar, ensuring cleaner combustion and improved engine response.

• Emissions Compliance: Meets stringent EPA Tier 4 Final and EU Stage IV standards through Selective Catalytic Reduction (SCR) and Cummins Diesel Particulate Filter (DPF), reducing oxides of nitrogen (NOx) and particulate matter (PM).

• Reliability and Durability: Features an integrated block design with 30% fewer parts than comparable diesels, eliminating external fluid lines to minimize leaks and enhance reliability.

• Fuel Efficiency: Offers up to 5% better fuel economy compared to previous models, with a 50% increase in torque for superior performance.

Designed by Cummins for total quality control, the QSX15 incorporates fully integrated electronic controls for precise operation and diagnostics. It’s a versatile engine suited for construction, mining, agriculture, and marine applications, providing economical and reliable power where you need it most.