Emissions: EPA/CARB Tier 3

Engine Type: 4 Cycle; In-Line; 6 Cylinder

Aspiration: Turbocharged and Charge-air Cooled

Displacement: 543 in3 (8.9 L)  

Rotation: Counterclockwise from flywheel end

• High Pressure Common Rail (HPCR) Fuel System with Full-authority Electronic Controls – Improves cold-weather starting and allows multiple injection events for cleaner, quieter operation with consistent performance at every rpm. Electronic controls deliver critical information for controlling costs, reducing maintenance, and seamless integration with other components.
• Stiffer Block and Head – Reduces noise and vibration. Fluid circuits are integrated, replacing hoses and eliminating potential leaks.
• Patented Mid-stop Cylinder Liners – Resist cavitation, extend life-to-overhaul.
• Improved Piston Design – Delivers optimal combustion by combining symmetrical piston bowl with centered injectors. Ni-Resist piston inserts give exceptional oil control for longer life.
• Improved Crankcase Ventilation – Virtually eliminates oil carryover.
• Valve Cover and Gasket – Isolated design with perimeter bolting allows for better sealing and improved reliability.
• Heavy-duty Lube System – Targeted piston cooling and increased lube flow to the power cylinder result in increased piston reliability and durability. Improved lube and bypass filtration system increase ring and bearing life by as much as 63%.
• Heavy-duty Roller Followers – Camshaft roller followers give the QSL engine superior durability and camshaft life.
• Auto-tensioning Belt Drive – Self-adjusting for optimum tension, increases fan, alternator, and fan belt life.
• Two-stage Fuel Filter – Provides a balanced level of particle separation to maximize fuel filter life and protect vital fuel system components.
• Gear Housing Design and Front-end Support – Improves durability with gear housing and accessories mounted directly to the block.