QSK19 for Oil & Gas

Power 525 - 800 hp
391 - 597 kW
Torque 1775 - 2275 lb-ft
2407 - 3084 N•m

Select an Application


Every QSK19 engine is a powerful example of Cummins Quantum System technology at work. Including self-diagnostics, prognostics and more. The QSK19 state-of-the-art electronic controls combined with a high-pressure injection system ensures clean, powerful and efficient operation every time. These powerful engines are designed to give every oil and gas application maximum performance with minimum maintenance.

Available in a range of ratings from 525 to 800 hp, these heavy-duty diesels meet Tier 2 emissions standards* without compromise. A low-maintenance two-stage oil filter is just one of the many features that minimize downtime. Cummins PowerMatch and Advisor are ready to provide expert assistance with your spec'ing and installation process.

Every QSK19 engine comes with a 2-year/2,000-hour base warranty, with 3-year/10,000-hour standard protection on major components.

* The next-generation QSK19 engine, available in January 2005, achieves Tier 3 engine emissions standards for the oil and gas market by incorporating new combustion technology and a common-rail fuel injection system. Tier 3 compliance for the QSK19 in additional markets will be announced in the near term.

The QSK19 high-pressure injection system and electronic controls ensure clean, powerful and efficient operation every time. The ECM continuously monitors data from strategically placed sensors within the engine, optimizing the fuel-to-air mixture for maximum combustion. Fuel is injected at pressures exceeding 25,000 psi. This results in better utilization of fuel with fewer emissions. Getting more energy out of every drop of diesel fuel also results in greater power.


No matter what type of oil and gas job you have to do - the QSK19 is designed to work as an integral part of your equipment. Our electronic control module has the built-in capacity and connections to take input from all your other equipment or vehicle systems and adjust engine performance to match.

And everything that makes this a great engine for original equipment also makes it a great engine for repowers.

Engine Type   In-Line, 4-Cycle,6-Cylinder  
Displacement   1153 cu in 19 liters
Advertised Horsepower   525-800 hp 392-597 kW
Peak Torque   1775-2275 lb-ft 2407-3084 N•m
Bore and Stroke   6.25 in x 6.25 in 159 mm x 159 mm
Aspiration   Charge Air Cooled or Turbo Aftercooled  
Oil System Capacity   80 U.S. qt 76 liters
Coolant Capacity   34 U.S. qt 32.2 liters
Length*   66.1 in 1679 mm
Width*   34.3 in 872 mm
Height*   64.3 in 1633 mm
Weight (wet)*   4,350 lb 1,973 kg

* Dimensions and weight will vary slightly depending on the exact engine configuration.

Model Advertised Power BHP (kW) Peak Torque lb-ft (Nm) Emissions Certification Level
QSK19 800 (597) @ 2100 rpm 2275 (3084) @ 1500 rpm Tier 2
QSK19 760 (567) @ 2100 rpm 2275 (3084) @ 1500 rpm Tier 2
QSK19 604 (450) @ 1800 rpm 2227 (3019) @ 1300 rpm Non-Certified

Cummins QSK19 engines come with these standard features, so you get more power and economy out of every one of them.

  • Extra-Wide Gear Train - Quieter, longer-lasting and capable of handling high loads of injector pressures with ease.
  • Single-Stage HolsetTurbocharger - Lower intake air temperatures provide increased air density, resulting in more power and lower emissions.
  • Large Fan Drive and Bearings - Increased fan size for improved cooling capacity.
  • Full-Authority Electronic Controls - Programmable controls optimize combustion based on engine load and atmospheric conditions. Provides advanced monitoring, diagnostic, prognostic and reporting capabilities, with engine protection features.
  • Two-Stage Oil Filter - Combination full-flow and bypass oil filter reduces maintenance costs as it extends service intervals.
  • Longer-Lasting Intake and Exhaust Valves - Valve and seat are machined out of select materials for longer life. Rotators on both intake and exhaust ensure uniform wear.
  • Precision-Honed Cylinder Liners - Precise liner machining with superior metal technology creates exceptional surface smoothness and durability.
  • Articulated Steel Pistons - 30% longer life, increased reliability and improved combustion result from the two-piece piston design.
  • High-Durability Camshaft - Microfinishing makes it last twice as long as previous designs. Improved contact between the crosshead and rocker lever reduces wear and improves durability.

Minimum maintenance was built into every QSK19 engine. For example: the articulated pistons last 30% longer until the first rebuild, and give an additional 30% longer life after it. Even the oil seals have been engineered so they're never exposed to contaminants - for virtually leak-free operation.

Maintenance Intervals.

Cummins QSK19 engines require an oil change every 250 hours.

For complete maintenance information, please consult your Owner's Manual or Operations and Maintenance Manual.
Cummins QuickServe®.

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