Cummins QSB 5.9 Specifications
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Cummins QSB 5.9 Specifications

ConfigurationIn-line 6-cylinder, 4-stroke diesel
Bore & Stroke102 mm x 120 mm (4.02 in x 4.72 in)
Displacement5.9 L (359 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 5.9 Performance Curves

TypeFile NameHorsepowerRated RPMCPLRatingCurve DateCurve NumberSize

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QSB 5 9 23026008464HDMay 10M 9136743.5k

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QSB 5 9 23026008464HOMay 10M 9137043.5k

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QSB 5 9 23030008464HOMay 10M 9203342.9k

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QSB 5 9 23030008464INTMay 10M 9200942.9k

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QSB 5 9 30526008464HOMay 10M 9136943.2k

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QSB 5 9 30526008464MCDMay 10M 9136544.1k

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QSB 5 9 33028008464HOMay 10M 9136643.5k

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QSB 5 9 35528008464HOMay 10M 9136847.9k

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QSB 5 9 35528008464INTMay 10M 9129843.4k

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QSB 5 9 38030008464HOMay 10M 9136442.9k

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QSB 5 9 42530001860HOMay 10M 9326278k

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QSB 5 9 42530001860INTMay 10M 9326347.7k

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QSB 5 9 42530008732HOMay 10M 9163243k

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QSB 5 9 44034001860HOMay 10M 9228443k

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QSB 5 9 48034001860HOMay 10M 9213242.8k