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
Features may include:
Engine Design
Unmatched performance driven through a perfectly matched turbocharger and a new 24-valve cylinder head that delivers industry-leading power density. 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
Fuel System
Bosch HPCR with hardened components to safely operate alternative fuels such as kerosene and JP8/JP5. Quiet operation, including an 80-percent reduction in noise at idle. Enhanced sociability virtually eliminates smoke and improves the whole boating experience.
Lubrication System
Front-mounted filters. Oil service interval increased to 500 hours if using ULSD fuels
Cooling System
Single loop, low temperature aftercooling eliminates the need for two keel coolers and lowers emissions. Tube and shell heat exchanger designed for superior durability and ease of service with minimal maintenance requirements. Fan drive available for radiator cooled configurations
Air Intake System
New Walker air filter significantly reduces noise
Exhaust System
Cast water cooled exhaust manifold for lower surface temperatures, safety and improved performance
Electrical System
12v and 24v, isolated and non-isolated, systems available
Electronics
24v Quantum System electronics feature a proven ECM to monitor operating parameters such as fuel consumption, duty cycle, engine load and speed, while providing diagnostics, prognostics and complete engine protection. Simplified electrical customer interface box for all vessel connections to reduce installation complexity
Certifications
Complies with U.S. EPA Tier 3 emissions regulations without the use of aftertreatment. Designed to meet the International Association of Classification Societies (IACS) and SOLAS requirements.
Photos
Highlights
Sleepy Eye, Minnesota
2024
Cummins
QSB6.7/QSB7 For Marine QSB6.7 261
Diesel
Available
Specifications
2024
Cummins
QSB6.7/QSB7 For Marine
QSB6.7 261
General
107 mm (4.21 in)
6
6.7 L (408 in3)
261 kW (355 MHP) 350 BHP
IMO 2 | EPA 3 | RCD 2
3000 RPM
124 mm (4.88 in)
Turbocharged / Aftercooled
High Pressure Common Rail
Diesel
Of Block: 748.0 mm (29.45 in)
857.0 mm (33.74 in)
910.6 mm (35.85 in)
1263.8 mm (49.76 in)
Overall: 658 kg (1450 lb)
Rotation: Counterclockwise facing flywheel | Rating: High Output