Smart torque across the rpm range gives the QSK23 the power to pull away quickly and maintain speed on an uphill climb, no matter how heavy the load. A high-pressure injection (HPI) fuel system injects fuel at 29,000 psi for the best fuel economy of any engine in its class, while maintaining low emissions. Plus, the QSK23 has an underplate, a floating head cover, integrated front and rear gear housing and a rear gear train, all to keep engine noise to a minimum. That’s something everyone on a work site can appreciate.

Cummins QSK23 shares the proven power cylinder design of our QST30 and QSK78 engines, for reliability and durability you can count on. Every day and every year. Here are just some of the heavy-duty components that make the QSK23 an excellent choice for the largest agricultural equipment.

• One-Piece Cast Iron Block – Heavy-duty design with wide cylinder spacing for long life and excellent rebuildability
• Full-Authority Electronic Controls – Sophisticated electronic controls optimize combustion based on engine load, atmospheric conditions, even fuel quality; they also provide advanced monitoring, diagnostic and reporting capabilities, with integrated engine protection features
• High-Pressure Injection – Works at up to 29,000 psi to optimize engine response with the best fuel economy and lowest emissions
• Precision-Honed Cylinder Liners – Precise liner machining with superior metal technology creates exceptional surface smoothness and durability; made of ferrous cast ductile iron so that expansion and contraction won’t cause excess wear
• Ferrous Cast Ductile Iron Pistons – For even expansion and contraction during thermal cycles; the same technology found in our 3500-hp QSK78
• Large-Diameter Camshaft – 105 mm of hardened surfaces handle high load capacities; created specifically to work with high-pressure injection systems
• Rear Gear Train – Significantly reduces engine noise
• Seven-Bolt Cylinder Head – Delivers increased clamping force, enabling high cylinder and injector pressures
• Two-Stage Oil Filter – Combination full-flow and bypass oil filter reduces maintenance costs as it extends service intervals