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The Tier3 and Stage IIIA Cummins QSB6.7 takes you to a whole new level of power, versatility and emissions control. It achieves Tier 3 and Stage IIIA compliance with in-cylinder technology that maintains a compact and simple installation that provides premium performance to every construction application.

This new 6.7-liter diesel is ready to handle your toughest job. It offers major enhancements that make every piece of construction equipment work harder, smarter, quieter and longer. Every time.

The QSB6.7 is based on the highly successful B Series engines with charge air cooling and turbocharging for strong performance and offers power ratings from 133-275 hp (99-205 kW).

This engine combines proven full-authority electronic controls with the impressive reliability and durability and long maintenance intervals you expect from one of the world's most successful and durable engine designs.

The QSB6.7 offers a wide range of standard features. Every QSB has improved cold-start capability and is 5-9 decibels quieter in operation than its predecessor. Making it as quiet at full load as the previous QSB did at no load!

To ensure that every QSB6.7 is perfectly matched to every piece of equipment, Cummins PowerMatch and Advisor are ready to provide expert assistance with your spec'ing and installation process.

Every QSB6.7 engine is covered by Cummins three-step warranty, one of the most comprehensive and simplest plans in the industry.

To view and print a PDF file of our Tier 3 QSB brochure, click here.

Engine ModelAdvertised
hp (kW) @ rpm		Peak
hp (kW) @ rpm		Peak Torque
lb-ft (N•m) @ rpm
QSB 275*275 (205) @ 2500275 (205) @ 2300730 (990) @ 1500
QSB 260260 (194) @ 2500270 (201) @ 2300730 (990) @ 1500
QSB 260260 (194) @ 2400270 (201) @ 2200730 (990) @ 1500
QSB 260260 (194) @ 2300270 (201) @ 2100730 (990) @ 1500
QSB 260260 (194) @ 2200270 (201) @ 2000730 (990) @ 1400
QSB 250250 (186) @ 2500 260 (294) @ 2300 728 (987) @ 1500 
QSB 240240 (179) @ 2500 250 (186) @ 2300 728 (987) @ 1500 
QSB 240 240 (179) @ 2000 245 (183) @ 2000 727 (986) @ 1500 
QSB 220220 (164) @ 2300230 (172) @ 2100700 (949) @ 1500
QSB 220220 (164) @ 2200230 (172) @ 2000697 (945) @ 1500
QSB 220220 (164) @ 2000230 (172) @ 1800700 (949) @ 1400
QSB 215215 (160) @ 2500225 (168) @ 2300655 (888) @ 1500
QSB 205**205 (153) @ 1800209 (156) @ 1600685 (929) @ 1300
QSB 200200 (149) @ 2100205 (149) @ 2100548 (743) @ 1500
QSB 190190 (142) @ 2400204 (152) @ 1900685 (929) @ 1500
QSB 190**190 (142) @ 2300203 (151) @ 1900685 (930) @ 1500
QSB 189189 (141) @ 2050189 (141) @ 2050541 (733) @ 1500
QSB 185185 (138) @ 2500185 (138) @ 1500575 (780) @ 1500
QSB 173173 (129) @ 2500178 (133) @ 2300590 (800) @ 1500
QSB 173**173 (129) @ 2200178 (133) @ 2000590 (800) @ 1400
QSB 171**171 (128) @ 2000171 (128) @ 2000485 (658) @ 1500
QSB 160160 (119) @ 2500165 (123) @ 1900540 (732) @ 1500
QSB 160**160 (119) @ 2300167 (125) @ 2100540 (731) @ 1500
QSB 155**155 (116) @ 2000 155 (116) @ 2000 456 (618) @ 1500 
QSB 133** 133 (99) @ 2200 133 (99) @ 2100 431 (584) @ 1450 

Additional ratings may be available. Check with your Cummins distributor.
*Indicates a restricted rating.
**Indicates a continuous rating.
Specifications.
Engine TypeIn-Line, 6-Cylinder
Displacement6.7 L* (408 cu in)
Advertised Horsepower133-275 hp (99-205 kW)
Peak Torque730 lb-ft (990 N•m)
AspirationTurbocharged and Charge Air Cooled
Oil System Capacity15-25.3 U.S. qt (14.2-23.9 L*)
Coolant Capacity10.6 U.S. qt (10 L*)
Length41.7 in (1,059 mm)
Width28.6 in (725 mm)
Height37.8 in (960 mm)
Wet Weight1,047 lb (475 kg)
*L=Liters/Litres

The QSB6.7 has been designed for minimal maintenance procedures. Dual stage fuel filtration will improve particle separation and filter life, and protect vital fuel system components. QSB6.7 engines are designed to run up to 500 hours between scheduled fuel and oil filter changes.

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

The advanced features of the QSB6.7 provide many benefits for your farming operation:
  • High Pressure Common Rail Fuel System - Delivers high injection pressure (1600 bar) for improved performance and fuel efficiency at every rpm
  • In-Cylinder Combustion Technology - Meets emissions standards without external components; is compatible with high-sulfur fuels for worldwide use
  • Rear Gear Train - Significantly lowers noise output to meet worldwide noise emission standards
  • Wastegated Turbocharger - Designed by Cummins Turbo Technology. Wastegated for better low-speed performance and high-speed boost
  • Dual Stage Fuel Filter - Provides a balanced level of particle separation to maximize fuel filter life and protect vital fuel system components
  • Parent Bore Cylinder Block - Designed for reduced noise and increased durability
  • Directed Piston Cooling - Lower piston temperatures lead to longer life
  • Wider Camshaft Lobes and Larger Tappet Wear Surface - Enhance durability and reliability

The base warranty includes full coverage on every QSB6.7 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 construction 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.
PowerMatch.

Cummins PowerMatch helps OEMs optimize engine performance so you can lower fuel consumption, increase operator satisfaction, improve equipment life and protect the customer's investment. PowerMatch tailors engine performance to specific equipment models and applications. Advanced electronics are used to enhance power curves and trim ratings, matching the job the equipment will be doing while taking into account variables such as work environment, load factors, ambient temperature and altitude. PowerMatch can also be used to create a unique torque curve, set up alternate governor settings or set up engine protection features.

Advisor.

Advisor puts a virtual engineer on the OEM team to shorten engineering cycle times and reduce costs. After a comprehensive review of load factors, climates, duty cycle and equipment usage, Cummins Advisor recommends the best engine and rating match for the equipment and operating conditions. It then builds a virtual model of the intake, exhaust, cooling, fuel and mounting systems. When Advisor identifies an issue, it lists acceptable alternatives. This approach allows changes while the equipment design is still "on paper," ensuring optimum performance while minimizing costs. Every time.




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