boating engine / professional vessel / inboard / propulsion
QSB6.7/QSB7 Cummins Marine



  • Market:

    boating, professional vessel

  • Type:

    inboard, propulsion, auxiliary

  • Power source:


  • Technology:

    turbocharged, common-rail

  • Other characteristics:

    Tier 3, Tier 2

  • Power:

    Max.: 550 ch (550 hp)

    Min.: 230 ch (230 hp)


184-405 kW | 247-542 hp

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
Maximize vessel performance and access comprehensive vessel diagnostic information via SmartCraft® electronics
Peace of mind delivered by the Cummins Captain’s Briefing and global service network
Built at Darlington Engine Plant in Darlington, U.K. and Rocky Mount Engine Plant in Rocky Mount, NC, U.S