Cummins QSB6.7/QSB7 for Marine
Torque:720 - 1250 lb-ft
Certification:RCD 2
Category:
500-999 HP
Keywords:
500-999 HP
- Product Description
- Specifications
- Ratings
- Maintenance
-
- Commodity name: QSB6.7/QSB7 for Marine
Power:230 - 550 hp<br/> Torque:720 - 1250 lb-ft<br/> Certification:RCD 2
Features & Benefits
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 networkFuel 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. Consult your local Cummins professional for a complete listing of available class approvals.
Optional Equipment
Engine Controls – Digital Throttle and Shift
Instrumentation – SmartCraft® digital displays standard with Zeus®, optional as inboard
Vessel System Integration – SmartCraft® monitors fluid level, vessel range, depth, vessel speed, rudder position, temperatures and more
SL Option Package – a collection of options to reduce engine size and weight. Includes a resized cooling system, side mount filters, low mount turbocharger, disposable closed crankcase air cleaner, remote-manual fuel priming pump, steel oil pan and block mounted engine brackets. Available on the 355, 380 and 425 MHP ratings. Also available a la carte where compatible. -
Configuration
In-line, 6-cylinder, 4-stroke diesel
Aspiration
Turbocharged / Aftercooled
Displacement
6.7 L (408 in3) Bore & Stroke
107 X 124 mm (4.21 X 4.88 in)
Rotation
Counterclockwise facing flywheel
Fuel System
High Pressure Common Rail
-
Ratings
Recreational Marine Propulsion Engines (Variable Speed Ratings)
Model
kW
MHP
BHP
Speed (RPM)
Rating
Emissions
QSB6.7
184
250
247
2600
High Output
IMO 2 | EPA 3 | RCD 2
QSB6.7
224
305
301
2600
High Output
IMO 2 | EPA 3 | RCD 2
QSB6.7
261
355
350
3000
High Output
IMO 2 | EPA 3 | RCD 2
QSB6.7 SL
261
355
350
3000
High Output
IMO 2 | EPA 3 | RCD 2
QSB6.7
279
380
375
3000
High Output
IMO 2 | EPA 3 | RCD 2
QSB6.7 SL
279
380
375
3000
High Output
IMO 2 | EPA 3 | RCD 2
QSB6.7
312
425
419
3000
High Output
IMO 2 | EPA 3 | RCD 2
QSB6.7 SL
312
425
419
3000
High Output
IMO 2 | EPA 3 | RCD 2
QSB6.7
353
480
473
3300
High Output
IMO 2 | EPA 3 | RCD 2
QSB6.7
405
550
542
3300
High Output
IMO 2 | EPA 3 | RCD 2
Packaging and delivery
Jining Yikang International Trade Co., Ltd. is a high-end intelligent equipment manufacturing company integrating production, learning and research. The company is located in Jining National High-tech Zone, covers an area of 40,000 square meters, and has R&D centers, office buildings, production workshops, warehouses, test fields and other facilities.
Customer visit
The company was established in 2012 and has the qualifications of authorized dealers of many well-known diesel engine brands. The main business includes the sales and maintenance of Cummins engines and accessories, as well as the production and sales of small engines, generator sets and remanufactured engines.
Factory appearance
The company implements the strategy of "rooted in the local area and serving the world" and has established stable cooperative relations with Cummins, Shandong University, Engineering Machinery Association and other units. Adhering to the mission of "driving the world forward and achieving the most beautiful life", with the purpose of "innovation is inexhaustible, customer achievement", to build a more efficient and cleaner future power world.
Brochures
RELATED PRODUCTS