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Products & ServiceMarine engines

Weichai M26 Marine Diesel Engine Series (330-808kW)


Product Profile

    The M26 series is originated from Baudouin of France (The Company has more than 100 years of history and has been the main supplier of diesel engines and gen-sets for the French military. It was acquired by Weichai in 2009 and is now a wholly-owned subsidiary of Weichai Group). The original products have been upgraded in terms of localization with higher performance, featuring low fuel consumption, long overhaul period and high reliability. The power range covers 330-808KW and is widely used in cargo ships, offshore fishing vessels, official ships and passenger ships.

Product parameters

Series 4-Stroke、water cooling、In-Line、Dry cylinder sleeve Number of cylinders 6/8/12
Cylinder Diameter/Stroke


Displacement 15.9/21.2/31.8L
specific lub-oil consumption 190g/kW·h Oil consumption 0.8g/ kW·h
Start Mode Electric start Idling 700±30r/min
Firing Order


Smoke intensity ≤1.0Rb


Emission standard IMO TIER II

Crankshaft rotation direction

(towards free end)


Product Spectrum

Model Air intak Rated Power(kW/Ps) Speed(r/min)
6M26C450-18 Supercharged and cold 330/450 1800
6M26C500-18 Supercharged and cold 368/500 1800
6M26C550-18 Supercharged and cold 405/550 1800
8M26C650-18 Supercharged and cold 478/650 1800
8M26C700-18 Supercharged and cold 515/700 1800
8M26C750-18 Supercharged and cold 551/750 1800
12M26C900-18 Supercharged and cold 662/900 1800
12M26C1000-18 Supercharged and cold 736/1000 1800
12M26C1100-18 Supercharged and cold 808/1100 1800
12M26C810-18 Supercharged and cold 596/810 1800

Remarks: Product parameters and portfolio are for reference only. For fishing vessel engine portfolio, please contact relevant personnel for official information.

Product Features

  • Cast iron engine body with mesh structure for high strength and good cooling performance.
  • Manual oil pump, bypass oil filter and high-flow oil pump that ensure stable engine performance.
  • All-copper seawater pump with cooling water and oil pipeline emergency joint to ensure reliable engine operation.
  • 全Newly designed air filter with optimized structure and sealing for higher filtration efficiency, cleaner intake, more compact and reasonable structure, and easier filter element replacement.
  • The newly designed oil sump for ships increases the heat dissipation area of the oil and fully considers its damping performance.
  • High reliability with an average service life of over 30,000 hours.
  • Good economy, featuring optimized engine intake and fuel system that explore engine potential and reduce fuel consumption.
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R & D

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


  • 4,000,000 units
  • 25-10000Ps 
  • 200 million kilowatts
  • Whole areas of application

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