Monday, July 22, 2024


Model: 6LY-STE

Brand: Yanmar

Product Description: YANMAR 6LY-STE 345HP Marine Diesel Engine

Discover the robust performance and exceptional reliability of the YANMAR 6LY-STE 345HP Marine Diesel Engine. Designed for both commercial and pleasure boat applications, this engine combines superior power, fuel efficiency, and innovative design features to ensure a smooth and safe sailing experience. With Yanmar’s renowned engineering integrity, the 6LY-STE delivers an optimal blend of power and refinement, making it the perfect choice for any marine enthusiast or professional.

The compact and lightweight design maximizes available space in the engine room, while its advanced technology ensures quiet operation and low emissions, adhering to stringent environmental standards. Whether navigating the high seas or enjoying a leisurely cruise, the YANMAR 6LY-STE 345HP is engineered to exceed expectations.

Specifications: YANMAR 6LY-STE 345HP

  • Engine Model: YANMAR 6LY-STE
  • Engine Type: 4-stroke, vertical, water-cooled diesel engine
  • Maximum Horsepower: 345HP (255 kW) @ 3,300 RPM
  • Displacement: 5.813 liters (354 cubic inches)
  • Number of Cylinders: 6 in-line
  • Bore x Stroke: 104 mm x 118 mm (4.09 in x 4.65 in)
  • Aspiration: Turbocharged with intercooler
  • Fuel Injection System: Direct injection with mechanical governor
  • Fuel Type: Diesel
  • Cooling System: Freshwater cooling via heat exchanger
  • Lubrication System: Forced lubrication by gear pump
  • Weight Dry: Approx. 750 kg (1,653 lbs)
  • Dimensions (L x W x H): 1,273 mm x 783 mm x 950 mm (50.1 in x 30.8 in x 37.4 in)
  • Emission Compliance: Meets IMO Tier II, EU RCD, and BSO II standards


  • High Performance: Engineered to deliver high torque and power, making it ideal for various marine applications.
  • Compact Design: Space-efficient layout ensures easy installation and maintenance.
  • Fuel Efficiency: Optimized fuel consumption for cost-effective operations.
  • Durability: Constructed with high-quality materials for long-lasting performance and reliability.
  • Low Noise and Vibration: Advanced engineering results in quieter and smoother operation.
  • Easy Maintenance: Accessible components and straightforward maintenance routines minimize downtime.
  • Environmentally Friendly: Low emissions comply with global environmental standards.


  • Leisure Yachts: Perfect for high-performance yachts requiring reliable power.
  • Commercial Vessels: Suitable for demanding commercial marine applications like fishing boats, ferries, and workboats.
  • Rescue and Patrol Boats: Offers quick response times and dependable performance in critical situations.

Choose the YANMAR 6LY-STE 345HP for unmatched power, efficiency, and peace of mind on the water. Invest in a legacy of engineering excellence that has been trusted by mariners worldwide for decades.

[Product Type: Engine]

Product Specifications

Power 345 HP (257.23kw)

Competitor Products


Brand: MarineDiesel

Power 345.2 HP

Model: 3408B-TA

Brand: Caterpillar

Cylinders Arrangement/Number L8
Power 350 HP
Rated Speed 1250 r/min

Model: TAMD121C

Brand: Volvo Penta

Power 407.9 HP

Model: UM10PB1TC

Brand: Isuzu

Power 385 HP


Model: E300

Brand: Evinrude

Cylinders Arrangement/Number V6
Power 300 HP
Rated Speed 5000 r/min

Model: L1276H

Brand: Lugger

Cylinders Arrangement/Number L6
Power 375 HP
Rated Speed 1800 r/min


Model: 300VMAX

Brand: Yamaha

Cylinders Arrangement/Number V6 (76 degrees)
Power 300 HP
Rated Speed 4500 r/min