Tuesday, July 23, 2024


Model: 455 HP


Product Description: MERCRUISER QSM11-405 HP

The MERCRUISER QSM11-405 HP is a powerful and reliable marine diesel engine designed to deliver outstanding performance for a wide range of boating applications. Built with cutting-edge technology and robust construction, this engine offers exceptional durability, efficiency, and versatility, making it the ideal choice for both commercial and recreational marine vessels.

This powerhouse engine is engineered to provide 405 horsepower at 2100 RPM, ensuring that you have all the power you need for demanding marine environments. The QSM11-405 HP combines advanced Cummins diesel technology with the superior craftsmanship of the MerCruiser brand, featuring electronic fuel injection, advanced cooling systems, and precise engineering to optimize fuel efficiency and reduce emissions.

From pleasure boats and yachts to commercial fishing vessels and workboats, the MERCRUISER QSM11-405 HP is designed to meet the rigorous demands of marine operations. It is easy to maintain, with robust diagnostics and service points that ensure dependable performance over its lifespan. Whether you’re cruising leisurely or working hard on the open water, this engine provides the reliability and power you need to get the job done.


  • Engine Model: MERCRUISER QSM11-405 HP
  • Horsepower: 405 HP (302 kW) @ 2100 RPM
  • Engine Type: Inline 6-cylinder, 4-stroke diesel
  • Displacement: 10.8 liters (661 cubic inches)
  • Aspiration: Turbocharged and aftercooled
  • Fuel System: High-Pressure Common Rail (HPCR) electronic fuel injection
  • Bore and Stroke: 4.92 in x 5.79 in (125 mm x 147 mm)
  • Cooling System: Heat exchanger or keel cooling
  • Lubrication System: Wet sump, spin-on oil filter
  • Electrical System: 12V or 24V DC electric starting; 70A alternator
  • Emissions: EPA Tier 3, IMO Tier II compliant
  • Weight: Approximately 2,900 lbs (1,315 kg)
  • Fuel Consumption: Optimized for lower fuel usage with electronic management
  • Dimensions:
    • Length: Approx. 58.7 in (1492 mm)
    • Width: Approx. 35.2 in (894 mm)
    • Height: Approx. 44.1 in (1121 mm)
  • Certification: Meets various marine and maritime regulatory standards

Key Features:

  • Advanced Electronic Controls: For precise throttle response and better fuel efficiency.
  • Robust Construction: Heavy-duty components designed for long-lasting durability.
  • Low Emission Levels: Compliant with stringent global emission standards.
  • Efficient Cooling System: Optimized heat exchanger or keel cooling to maintain optimal operating temperatures.
  • Ease of Maintenance: Thoughtfully placed service points for convenient access and simplified maintenance routines.
  • Diagnostic Capabilities: Built-in electronic diagnostics for real-time monitoring and troubleshooting.

Experience the exceptional power, reliability, and efficiency of the MERCRUISER QSM11-405 HP, engineered to surpass the expectations of demanding marine environments and ensure you can navigate the waters with confidence.

[Product Type: Engine]

Product Specifications

Strokein 5.79 in
Stroke 147 mm (5.79in)
Rated Speed 2100 r/min
Powerkw 298 kW
Power 405 HP (301.97kw)
Displacementin3 661 in3
Displacement 10.8 cm3 (0.01L, 0.66in3)
Cylinders Arrangement/Number 6
Borein 4.92 in
Bore 125 mm (4.92in)