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Products & ServiceMarine engines

Weichai M55 series marine diesel engine (1150-1620kW)


Parameters Table

Type Four-stroke, water cooled, V type, turbocharged and aftercooled Number of cylinders 12/16
Bore & stroke 180×215 (mm) Displacement 65.65 L / 87.5 L
Oil consumption rate ≤0.2 g/kW.h Noise ≤111 dB(A)
Minimum fuel consumption rate 192 g/kW.h Idle speed 650 r/min
Starting system Electrical Rotation
(facing the flywheel)
Dimensions  (L×W×H) 12M55: 2927×1565×2637 (mm)
16M55: 3518×1555×2484 (mm)
Net weight 12M55: 10000 kg
16M55: 11500 kg

Model Portfolio Table

Series Model Aspiration Rated power kW/Ps Speed r/min Fuel system Emission Power rating
12M55 12M552450-16E210 TA 1800/2450 1600 HPCR IMO Ⅱ P1
12M55C2700-16E210 TA 1985/2700 1600 HPCR IMO Ⅱ P1
12M55C2250-18E211 TA 1654/2250 1800 HPCR IMO Ⅱ P1
12M55C2450-18E211 TA 1800/2450 1800 HPCR IMO Ⅱ P1
12M55C2600-18E211 TA 1912/2600 1800 HPCR IMO Ⅱ P1
12M55C2738-18E211 TA 2013/2738 1800 HPCR IMO Ⅱ P1
12M55C3000-18E211 TA 2205/3000 1800 HPCR IMO Ⅱ P2
12M55C3450-18E211 TA 2536/3450 1800 HPCR IMOⅡ P3
16M55 16M55C2800-15E210 TA 2060/2800 1500 HPCR IMOⅡ P1
16M55C3000-15E210 TA 2205/3000 1500 HPCR IMOⅡ P1
16M55C3400-15E210 TA 2500/3400 1500 HPCR IMOⅡ P1
16M55C3128-18E211 TA 2300/3128 1800 HPCR IMOⅡ P1
16M55C3400-18E211 TA 2500/3400 1800 HPCR IMOⅡ P1
16M55C3810-18E211 TA 2800/3810 1800 HPCR IMOⅡ P1
16M55C4000-18E211 TA 2941/4000 1800 HPCR IMOⅡ P2

Remark: The delivery date of products marked with * shall be subject to the reply of the manufacturer. Product parameters and model portfolio are for reference only. Please contact relevant personnel for official information on delivery time and fishing boat model portfolio. 

Product description

  • High torque reservation
  • Minimum fuel consumption 192g/kW·h
  • Overhaul period of 20000 h
  • Emission meets IMO II

Safe and reliable

  • The high-strength design of structural parts such as engine block, piston and bearing bush ensures the reliability of diesel engine under high explosion pressure
  • Using the global excellent supplier system of Weichai, the quality of parts is reliable
  • Withstand the most stringent durability test and assessment; ensure the reliability of key parts and components; and the overhaul period of the whole engine is over 20000h
  • Both cooling and lubrication systems have emergency interfaces
  • Perfect self-diagnosis system, perfect failure protection mode, and safe control strategy
    Replace the filter without stopping

Strong power

  • Accurate control by electronic control units, high injection pressure, small fluctuation of rotating speed, and strong power
  • Low-speed and high-torque design with the torque reserve of 18%, quick response, and fast speed increase
  • 50% rated speed can reach 115% rated torque

Economical and fuel-efficient

  • The fuel injection law is optimized, the fuel injection pressure, fuel injection quantity and fuel injection time are accurately controlled, the fuel is fully atomized, and the minimum fuel consumption rate is 192g/kW•h
  • Customized design for lower fuel consumption

Comfortable and environmentally friendly

  • It can realize multiple injections such as pre-injection and post-injection, and the noise and vibration are reduced by 20% compared with the mechanical pump system
  • Water jacket exhaust pipe and water jacket exhaust tail pipe are used to reduce engine compartment temperature
  • IMOⅡ ship emission standards are met

Strong practicability

  • LCD Internet instruments, vibration isolators, and hand-pressed oil well pumps can be equipped to meet the requirements of different customers
  • Modular design, compact structure, convenient engine room layout
  • Side observation hole on engine block, convenient maintenance, beautiful compact appearance
  • Different control strategies are adjusted according to different performance requirements
  • Receive/output various control signals, which meet the requirements of automation control
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R & D

20000 +
Global R & D personnel
R & D institutions in five countries, ten regions


  • 5,000,000 units
  • 22-10000Ps
  • 200 million kilowatts
  • Application for all markets