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Your business depends on people who've got what it takes - supported by equipment with the power, the durability and the ratings to get the job done. Known for excellent power density, economical operation and exceptional uptime, the QSK23 is a powerful example of Cummins Quantum System technology at work. Including self-diagnostics, prognostics and more. It uses the same rugged power cylinder design proven in our larger diesels - for the performance and durability you need and the low maintenance and operational costs today's oil and gas business demands.

Available in 760-950 hp ratings, these powerful engines come with high-tech electronic features for superior reliability and durability on every job. These heavy-duty diesels meet every current EPA and Euro standard for Tier 1 and will meet Tier 2 with minor modifications.

Every QSK23 engine comes with a 2-year/2,000-hour base warranty, with 3-year/10,000-hour standard protection on major components.

The QSK23 state-of-the-art electronic controls combined with its high-pressure injection system ensures clean, powerful and efficient operation every time. The Cummins QSK23 is the ideal match for your most aggressive and specialized applications. The 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 gear train, all to keep engine noise to a pleasant minimum. That's something every oil and gas operation can appreciate. Every day.
Specifications.
Engine Type In-Line, 4 Cycle6-Cylinder 
Displacement 1412 cu in23.2 liters
Advertised Horsepower 760-950 hp567-708 kW
Peak Torque 2401-2893 lb-ft3255-3922 N•m
Bore and Stroke 6.69 in x 6.69 in170 mm x 170 mm
Aspiration Turbocharged or Charge Air Cooled 
Oil System Capacity 55 U.S. qt52 liters
Coolant Capacity 48.8 U.S. qt46.2 liters
Length 73.2 in1859 mm
Width 37.0 in940 mm
Height 65.2 in1656 mm
Weight (wet) 6,300 lb2,858 kg

Cummins QSK23 shares the proven power cylinder design and the heavy-duty components of our QST30 and QSK78 engines, for reliability and durability you can count on. Every day and every year.
  • 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. This is 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 even 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.

Every mechanic knows, simpler is better. That's why Cummins QSK23 has an in-line 6-cylinder configuration, versus the competition's V12.

And every foreman knows, the less time an engine spends in service, the more productive it is on the job.
Maintenance Intervals.

Consistent profitability demands continuous operation. That's why Cummins QSK23 engines only require oil and oil filter changes every 250 hours or 6 months.

When service is needed, the oil pump, water pump and accessories are all front-mounted and easy to reach.
For complete maintenance information, please consult your Owner's Manual or Operations and Maintenance Manual.
Cummins QuickServe®.

Cummins QuickServe offers you factory-certified technicians, the most sophisticated diagnostic and repair tools in the industry, and the largest international parts and service network of any engine manufacturer. Our worldwide team of mobile service technicians is always ready to deliver service when and where you need it. Every minute. Every day. Every year.

 

Cummins QSK23 gives you everything you need. It's one of the simplest and most comprehensive plans anywhere. It includes full 2-year/2,000-hour complete coverage, with 3-year/10,000-hour standard protection on major components.

Three simple steps explain everything you need to know:

Step One: Full coverage on all Cummins industrial engines and branded components with unlimited hours during the first year of operation. This includes Cummins branded electrics such as alternators, starters, etc.

Step Two: Full coverage is extended for the second year, up to 2,000 hours of operation. Total hours are cumulative from the time the engine goes in service.

Step Three: Major components coverage including block, crankshaft, camshaft and rods on all products for the third year or up to 10,000 hours of operation. Total hours are cumulative from the time the engine goes in service.

For complete warranty details, please see the US and Canadian warranty brochure (3381321) or International warranty brochure (3381322).

 



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