YIKANG

Cummins QSB6.7/QSB7 for Marine


Power:230 - 550 hp
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 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. 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.

Packaging and delivery

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.

Customer visit

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.

Factory appearance

Brochures

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