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Every day, QSM engines are put to the test in construction equipment worldwide with superior performance.

Maintenance is kept to an absolute minimum, with oil change intervals that are double the previous standards in some applications, sealed sensors and an auto-tensioning belt drive.

Available in a range of ratings from 250-400 hp (186-298 kW), every QSM is perfectly matched to every piece of equipment.  The QSM not only meets Tier 2 and Euro Stage II emission standards, its advanced design can reach Tier 3 and Stage IIIA requirements as well, with minimal changes.  Cummins engineers work with the original equipment manufacturers, shaping power curves and ratings to align with the work environment, load factors and operating modes.  Then, we optimize the engine's performance with the other vehicle components and subsystems, using Cummins Advisor.

The QSM come with virually every feature standard.  QSM options include REPTO (Rear Engine Power Take-Off).

Every QSM engine is covered by Cummins three-step warranty, one of the most comprehensive and simplest plans in the industry.
Engine Model Advertised hp (kW) @ rpm Peak hp (kW) @ rpm Peak Torque lb-ft (N•m) @ rpm
QSM 400*400 (298) @ 2100 446 (333) @ 1800 1400 (1898) @ 1400 
QSM 400 400 (298) @ 2100 403 (300) @ 1800 1400 (1898) @ 1400 
QSM 400400 (298) @ 1800 

400 (298) @ 1800 

1400 (1898) @ 1400
QSM 385 385 (287) @ 1800 385 (287) @ 1800 1400 (1898) @ 1400 
QSM 375 375 (280) @ 1800 400 (298) @ 1800 1400 (1898) @ 1400 
QSM 375 375 (280) @ 2000 400 (298) @ 1800 1400 (1898) @ 1400 
QSM 360 360 (268) @ 2100 396 (295) @ 1800 1350 (1830) @ 1400 
QSM 360** 360 (268) @ 1800 360 (268) @ 1800 1260 (1708) @ 1400 
QSM 350 350 (261) @ 2100 385 (287) @ 1800 1309 (1775) @ 1400 
QSM 335 335 (250) @ 2100 367 (274) @ 1800 1257 (1704) @ 1400 
QSM 335 335 (250)@ 2000 367 (274) @ 1800 1321 (1791) @ 1400 
QSM 335**335 (250) @ 1800 335 (250) @ 1800 1255 (1702) @ 1400 
QSM 330 330 (246)@ 2100 365 (272)@ 1800 1234 (1673) @ 1400 
QSM 330 330 (246)@ 2100 353 (263) @ 1800 1075 (1458) @ 1400 
QSM 330 330 (246) @ 2100 340 (254) @ 1800 1170 (1586) @ 1400 
QSM 330 330 (246) @ 2100 330 (246) @ 1800 1235 (1674) @ 1400 
QSM 320 320 (239) @ 2000 350 (261) @ 1800 1260 (1708) @ 1400 
QSM 315 315 (235) @ 2100 315 (235) @ 2100 1178 (1597) @ 1400 
QSM 315** 315 (235) @ 1800 315 (235) @ 1800 1160 (1573) @ 1400 
QSM 299** 299 (223) @ 1800 299 (223) @ 1800 1260 (1708) @ 1400 
QSM 299 299 (223) @ 2100 315 (235) @ 1800 1182 (1603) @ 1400 
QSM 290 290 (216) @ 2100 320 (239) @ 1800 1092 (1481) @ 1400 
QSM 290 290 (216) @ 2100 299 (223) @ 1800 952 (1291) @ 1400 
QSM 280 280 (209) @ 2100 280 (209) @ 2100 950 (1288) @ 1400 
QSM 270** 270 (201) @ 1800 270 (201) @ 1800 1010 (1369) @ 1400 
QSM 250 250 (186) @ 2100 250 (186) @ 2100 845 (1146) @ 1300 
All ratings are intermittent unless otherwise noted.
Additional ratings may be available.  Check with your Cummins distributor or dealer.
*Indicates restricted rating
**Indicates continuous rating

The QSM 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. This increases engine responsiveness, improves fuel efficiency and significantly reduces noise levels.

The Holset wastegated turbos provide high efficiency and responsive torque every time for everyday dependability.
Specifications.
Engine Type In-line, 6-Cylinder  
Displacement 660 cu in 10.8 liters 
Advertised Horsepower 290-400 hp 216-294 kW 
Peak Power 446* hp 333* kW 
Peak Torque 1050-1400 lb-ft 1424-1898 N•m 
Nominal Torque Rise 40%  
Bore and Stroke 4.92 in x 5.79 in 125 mm x 147 mm 
Aspiration Turbocharged and Charge Air Cooled 
Oil System Capacity 41 U.S. qt 39 liters 
Coolant Capacity 10 U.S. qt 9.5 liters 
Length 51.4 in 1306 mm 
Width 36 in 914 mm 
Height 50.4 in 1280 mm 
Weight (Wet) 2,170 lb 984 kg 
*Indicates restricted rating

Every Cummins QSM engine is designed to go the distance, with heavy-duty components that have been proven in hundreds of applications, around the world.
  • Advanced Combustion Technology - Optimized injector tips and a reshaped steel piston bowl improve fuel economy and emissions control, resulting in longer change intervals.
  • Articulated Pistons - Steel-topped articulated pistons handle higher cylinder temperatures for improved fuel economy and emissions control.
  • Patented Mid-Stop Cylinder Liners - Resist cavitation, extend life-to-overhaul.
  • Improved Camshaft Design - Exhaust valve lobes are designed to improve wear tolerance, and the injector lobe profile has been revised to optimize injection.
  • Sealed Sensors - Fully sealed to resist water intrusion and enhance reliability. Combined temperature and pressure sensors reduce inventory and simplify maintenance.
  • CELECT™ Electronic Engine Management - Provides superior performance, fuel efficiency, diagnostics and prognostics using full-authority electronics. Its programmable features let you customize engine performance to equipment use.
    •
    • REPTO - Rear Engine Power Take-Off provides additional capability for driving remote-mounted devices

    The QSM was designed to deliver more time in the field and less time being serviced. Maintenance intervals have been made longer, and service has been made simpler.
    Maintenance Intervals.
    Cummins QSM engines feature a Venturi™ oil filter by our Fleetguard subsidiary in combination with an improved lube system that increases oil flow, reduces lubrication delay at start-up and improves protection.
    For complete maintenance information, please consult your Owner's Manual or Operations and Maintenance Manual.
    The base warranty includes full coverage on every B Series engine and branded components, including electrics such as starters and alternators for unlimited hours during the first year of operation, extending through 2 years or 2,000 hours (whichever comes first). The base warranty also includes 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.

    Extended coverage is available with our Encompass Protection Plans with the flexibility to meet the needs of your agriculture operation.  Cummins Encompass has you covered, around the clock and around the globe. 

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

    Getting every installation right - the first time - is as important to Cummins as it is to you. PowerMatch and Advisor help ensure that we get it right, every time.

    Cummins partners with OEM engineers to test and match the power of the QSM engine to specific equipment models and applications. We use our advanced electronics to shape power curves and ratings to match the jobs your equipment will be doing, taking into account the working environment, load factors, ambient temperatures and operating modes. Then we optimize the engine's performance with other vehicle components, using Advisor.