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Cummins QSB 6.7 Specifications

ConfigurationIn-line 6-cylinder, 4-stroke diesel
Bore & Stroke107 mm x 124 mm (4.21 in x 4.88 in)
Displacement6.7 L (408 in3)
Aspiration      Turbocharged/Aftercooled
Rotation        Counterclockwise facing flywheel
  • Unmatched peformance driven through a perfectly matched turbocharger and a new 24-valve cylinder head that delivers industry-leading power density
  • Quiet operation, including an 80-percent reduction in noise at idle, is one of the many benefits from the common-rail fuel system
  • Enhanced sociability from the high-pressure common-rail design virtually eliminates smoke and improves the whole boating experience
  • Peace of mind delivered by the Cummins Captain’s Briefing and global service network

QSB 6.7 Performance Curves

TypeFile NameHorsepowerRated RPMCPLRatingCurve DateCurve NumberSize

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QSB 6 7 Performance Curve & CPL's290.5k

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QSB 6 7 23030003887INTMay 13M 9413576.7k

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QSB 6 7 25026003887HDMay 13M 9396076.5k

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QSB 6 7 25026003887HD KCAug 13M 9396296.6k

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QSB 6 7 25026003887HOMay 13M 9385878.4k

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QSB 6 7 30526003887HOApr 13M 9395980.7k

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QSB 6 7 30526003887MDMay 13M 9396177.3k

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QSB 6 7 30526003887MD KCAug 13M 9396395.5k

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QSB 6 7 35528004191INTOct 13M 9437582.1k

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QSB 6 7 35530004191HOOct 13M 9413384.1k

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QSB 6 7 35530004699HOJul 14M 94979203.3k

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QSB 6 7 38030004191HOOct 13M 9413186.1k

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QSB 6 7 38030004191INTOct 13M 9413283.9k

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QSB 6 7 38030004699HOJul 14M 94978203.9k

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QSB 6 7 42530004191HOOct 13M 9412985.9k

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QSB 6 7 42530004191IDSep 15M 94130206k

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QSB 6 7 42530004191INTOct 13M 9413083.4k

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QSB 6 7 42530004699HOJul 14M 94977203.7k

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QSB 6 7 48030004191IDJan 15M 95035203.9k

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QSB 6 7 48033004191HOOct 13M 9412783.8k

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QSB 6 7 55033004191HOOct 13M 9412583.6k
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